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Musculoskeletal Disorders
N/A
215
Medical
Graduate
11/01/2008

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Term
HLA-DR4
Definition
RA, Giant Cell Arteritis
Term
HLA-B27
Definition
Ankylosing Spondylitis, Reactive Arthritis
Term
HLA-DQA1, HLA-DQB1
Definition
Sjogren's Syndrome
Term
HLA-DR/DQ
Definition
SLE
Term
Infiltration by inflammatory cells (CD4, T+ B cells),release of cytokines IL-1 & TNF-alpha, increased vascularity, aggregation of fibrin - formation of pannus
Definition
RA
Term
Osteoclastic activity in underlying bone driven by RANKL from T-cells and synovial fibroblasts
Definition
RA
Term
AM stiffness, soft tissue swelling of 3+ jts, PIP, MCP or wrist involvement - symmetric
Definition
Criteria for RA
Term
Boutonniere Deformity
Definition
RA
Term
Swan Neck Deformity
Definition
RA
Term
Ulnar Deviation of Fingers
Definition
RA
Term
Arthritis, uveitis in a child under 16
Definition
JRA
Term
Triad of: Arthritis, urethritis/ nongonococcal cervicitis, conjunctivitis
Definition
Reactive Arthritis
Term
Asymmetrical sterile arthritis following a GU or GI infection
Definition
Reactive Arthritis
Term
Symmetric arthritis of the LEs in a pt. with Chron's ds
Definition
Arthritis of Inflammatory Bowel Ds
Term
AM stiffness in the axial spine, B/L SI involvement
Definition
Ankylosing Spondylitis
Term
Loss of flexibility in the spine, loss of chest expansion
Definition
Ankylosing Spondylitis
Term
Bamboo Spine
Definition
Ankylosing Spondylitis
Term
Asymmetric arthritis of the DIP joints in a pt with nail pitting
Definition
Psoriatic Arthritis
Term
Pencil-in-cup appearance of phalanges on X-ray
Definition
Psoriatic Arthritis
Term
RA, splenomegaly, abnormally low WBC count (granulocytopenia)
Definition
Felty's Syndrome
Term
Lymphocyte infiltration of exocrine glands (esp. salivary and lacrimal glands)
Definition
Sjogren's Syndrome
Term
Dry eyes, Dry Mouth, B/L Parotid gland swelling
Definition
Sjogren's Syndrome (Sicca Syndrome)
Term
ANA, SS-A, SS-B
Definition
Sjogren's Syndrome
Term
Rose Bengal Score or Lissamine Green Dye Test
Definition
Sjogren's Syndrome
Term
Most common cause of Non-gonococcal bacterial arthritis
Definition
S.Aureus
Term
Acute onset of pain and swelling in the knee, fever in a 60y/o patient
Definition
Non-gonococcal Bacterial Arthritis
Term
Fever, chills, rash and acute onset of monoarthritis of the knee in a 27 y/o sexually active female
Definition
Gonococcal Arthritis
Term
Insidious, progressive jt/ back pain in a patient with a positive PPD
Definition
Tuberculous Arthritis (Pott's Ds when spinal involvement)
Term
Acute onset of a symmetrical small joint arthralgia that is self-limiting
Definition
Viral Arthritis
Term
Most common causes of viral arthritis
Definition
Parvovirus B19, Rubella (including following a rubella vaccine), Hep B or C
Term
Podagra
Definition
MSU gout of the big toe
Term
Why distal joints are more affected by gout than proximal ones
Definition
Temperature - distal jts have a lower temp, so the MSU crystals precipitate out easier there
Term
Pathophysiology of gout
Definition
MSU crystals are chemotaxic to leukocytes, cytokines are released, inflammation follows; phagocytosis of crystals leads to cell repture and release of lysosomal enzymes furthering the inflammation(/ redness/ warmth?)
Term
Acute onset (hours) of monoarthritis of the first MTP jt - typically at night, accompanied by intense redness, heat and swelling
Definition
MSU gout
Term
Associatd with consumption of red meat and EtOH
Definition
MSU gout
Term
Negatively birefringent under polarizing light microscope
Definition
MSU crystals
Term
Another name for pseudogout
Definition
CPPD arthritis (calcium pyrophosphate dihydrate)
Term
At what age do S/S of MSU gout start?
Definition
Around age 18 in men, after menopause in women
Term
Associated with ANKH gene
Definition
Hereditary pseudogout; ANKH is a transmembrane inorganic pyrophosphate transport channel
Term
Pathophysiology of pseudogout
Definition
Crystals form in the articular matrix, menisci and intervertebral joint; seeding of the jt space induces chemokines, initiating a neutriphil invasion; free-radicals and cytokines are released and macrophages move into the joint with associated fibrosis
Term
Positively birefringent
Definition
CPPD crystals
Term
Calcium phosphate crystals, often deposited on vessels
Definition
Calcium Apatite Gout
Term
Accumulation of iron in body tissues (esp. liver and pancreas) accompanied by osteoarthritis-like sxs
Definition
Hemochromatosis
Term
HFE
Definition
The hemochromatosis gene, located on the short arm of chr.6, which encodes a molecule regulating iron absorption across the intestinal epithelium
Term
Heberden's nodes
Definition
Osteophytes in the DIP jts in patients with OA
Term
Bouchard's Nodes
Definition
Osteophytes in the PIP jts of patients with OA
Term
Pathophysiology of OA
Definition
Early changes involve a decrease in proteoglycans and an increase in water content with weakening of the collagen; IL1, TNF alpha and NO levels increase in the cartilage; chondrocyte apoptosis of the articular cartilage; eventually - thinning of the cartilage, subchondral sclerosis and osteophyte formation
Term
Deep, achy joint pain that worsens with use; jt enlargement; involvement of the DIP + PIP jts with MCP sparing
Definition
OA
Term
Gull-wing Deformity
Definition
OA
Term
ABCDEs of Arthritis
Definition
Alignment of bones, Bone integrity, Cartilage/ jt space, Deformities, Erosions, Soft Tissue involvement
Term
ABCDEs of Arthritis
Definition
Alignment of bones, Bone integrity, Cartilage/ jt space, Deformities, Erosions, Soft Tissue involvement
Term
Deep, achy pain referred to the paraspinal region that doesn't radiate and worsens on extension of the spine
Definition
Facet Joint Syndrome
Term
Gold Standard in Dx of Facet Jt Syndrome
Definition
Diagnostic Nerve Block - blocking the n. to the joint with anesthetic and then blocking the joint iteself with anesthetic to determine which causes the pain to go away
Term
Fragments of bone and cartilage debris released into the joints with chronic synovitis
Definition
Pathognomonic for Neuropathic (Charcot) Joints
Term
Severely degenerated joints secondary to loss of innervation to the joint
Definition
Neuropathic (Charcot) Joints
Term
Ganglion v. Synovial Cyst
Definition
Ganglion cysts are typically small and located near a joint; synovial cysts represent herniated synovial membrane from a joint
Term
A cyst arising from a cystic or myxoid degeneration of CT; the cystic cavity lacks a true lining of cells
Definition
Ganglion Cyst
Term
Bible Cyst
Definition
A ganglion cyst on the dorsum of the wrist
Term
A cyst arising from synovial lining that has herniated thru the jt capsule
Definition
Synovial Cyst
Term
Baker Cyst
Definition
A synovial cyst that develops in the popliteal space, often in the setting of an arthritis
Term
Benign neoplasms that develop in the synovial linings of jts, tendon sheaths, and bursae
Definition
Villonodular Synovitis
Term
Proliferation of synovial lining; contains chromosomal abnormalities
Definition
Villonodular Synovitis
Term
Patient presents wtih a slow-growing painless mass on the flexor surface of the middle finger
Definition
Giant cell Tumor of the Tendon Sheath (AKA: Localized nodular tenosynovitis) - the most common soft tissue tumor of the hand
Term
Pain, joint locking and recurrent swelling of the knee; a tangled mat of red-brown folds is seen in the synovium
Definition
Pigmented Villonodular Synovitis
Term
A dysraphism involving complete destruction of the SC
Definition
Myeloschesis
Term
Adduction of the forefoot (causing the lateral border of the foot to appear convex)
Definition
Metatarsus adductus
Term
Causes of in-toeing
Definition
Metatarsus adductus(most common cause in kids <18mos), internal tibial torsion (most common cause in kids 18mos-3 yrs), internal femoral torsion (most common cuase in kids >3yrs)
Term
Cause of ~10% of scoliosis cases
Definition
Congenital scoliosis
Term
Scoliosis appearing during or right after a growth spurt (ex: ~10 y/o)
Definition
Congenital Scoliosis
Term
Causes of Congenital Scoliosis
Definition
Partial or complete failure in vertebral formation; partial or complete failure in body segment formation
Term
B/L low/ absent longitudinal arch; arch flattens when weight bearing and foot becomes pronated
Definition
Hypermobile Pes Planus (rigid flat feet indicates a more concerning pathology)
Term
Autosomal dominant disorder of skeletal development with deficient/ imperfect ossification of bones such as the clavicle, cranium and pelvis
Definition
Cleidocranial dystosis
Term
Osf2/ Cbfa1
Definition
Osteoblast specific transcription factor 2/ core binding factor activity 1 - two genes associated with Cleidocranial dysotsis; located on Chr. 6p21
Term
Cause of Cleidocranial Dystosis
Definition
A mutation in the transcription factor CBFA1, which controls osteoblast differentiation
Term
4 common UE congenital Limb Abnormalities
Definition
1)hypoplasia or absence of the thumb; 2)radial deficiency; 3) ulnar deficiency; 4)transverse deficiency of the forearem (complete absence fo the hand and wrist can occur)
Term
3 common LE congenital abnormalities
Definition
1)fibular deficiency; 2)tibial deficiency; 3)longitudinal deficiency of the femur
Term
Abnormally high-positioned scapula
Definition
Sprengel Deformity- congenital, may see webbing of skin btwn neck and scap.; may be assoc. with a Klippel-Feil Abnormality (fusion of any 2 cervical vert.)
Term
Capital femoral epiphysis
Definition
AKA Femoral Head
Term
Obese teenage male presents with knee pain
Definition
Slipped Capital Femoral Epiphysis (SCFE)
Term
Beak-sign
Definition
SCFE
Term
Widening of the femoral epiphysis followed by slippage (femoral head stays in the acetabulum, femoral neck roates -usu anteriorly)
Definition
SCFE
Term
Muscle loss and wasting, thought to be caused by death of the ventral horn motor neurons
Definition
Arthrogryposis multiplex
Term
Congenital contractures and rigid jt deformities of multiple jts (LE>UE)
Definition
Arthrogryposis multiplex
Term
Degeneration of the anterior longitudinal ligament followed by ossification of the ALL; spans at least 4 segments
Definition
Diffuse Idiopathic Skeletal Hyperotosis (DISH)
Term
Most common cause of Pyogenic Osteomyelitis
Definition
S.aureus (followed by H.influenza and GBS)
Term
Small interosseous abscesses involving the cortex of bone that are walled off by reactive bone
Definition
Brodie Abscesses - seen in pyogenic osteomyelitis
Term
Fever, malaise, chills, unrelenting pain, immobilization/ protection of the limb (ex -pt won't bear weight)
Definition
Pyogenic Osteomyelitis
Term
Newborn with more folds on one leg than the other
Definition
Congenital Hip Dysplasia
Term
Tests for Congental Hip Dysplasia
Definition
Barlow Test, Ortolani Test, Galeazzi Sign
Term
Barlow Test
Definition
A Test for hip instability with dislocation occurring with flexion, adduction and a posterior force/ push
Term
Ortolani Test
Definition
A test for hip dysplasia involving abduction and anterior pressure/ pull; "click/ clunk"
Term
Galeazzi Sign
Definition
A test for hip dysplasia invovling flexing the infant's knees while they're supine so that the feet are flat on the table; looking to see if the knees are level - unlevel knees = positive test
Term
Patient has a "W" style seated posture
Definition
Internal Femoral Torsion
Term
Foot exhibits: plantar flexion (equines) of the ankle, adduction (varus) of the heel/ hindfoot, high arch (cavus), and adduction of the forefoot
Definition
Talipes Equinovarum (AKA Club Foot)
Term
Bowlegs
Definition
Genu Varum
Term
Knock-knees
Definition
Genu Valgus
Term
Results from a lack of Vit. D
Definition
Osteomalacia/ Rickets
Term
Pathophysiology of Rickets
Definition
Vit. D deficiency results in hypocalcemia and a secondary hyperparathyroidism; the hyperparathyroidism leads to hypophosphatemia, which affects the growth plate (there's an enlargement of the hypertrophic zone of cartilage in response to the hypophosphatemia); newly formed bone is also poorly mineralized
Term
Muscular hypotonia, soft/ thin skull, knobby deformities of jts and ribs
Definition
Osteomalacia/ Rickets
Term
Harrison groove
Definition
Osteomalacia/ Rickets
Term
Pigeon-breast deformity
Definition
Sternal deformity seen in Rickets/ Osteomalacia
Term
Lab Tests for Osteomalacia/ Rickets
Definition
Serum vit. D, PTH, Calcium, phosphorous and alk.phos. levels
Term
Overactive osteoclastic bone resorption with resultant new bone formation
Definition
Paget's Ds
Term
RANK
Definition
Receptor Activator of Nuclear Factor-KB; chr. 18; a factor critical in controlling osteoclast function - assoc. with Paget's Ds
Term
Elevated alk.phos level, pain, facial deformities and fractures
Definition
Seen in Paget's Ds
Term
An autosomal dominant disorder that manifests with fragility of the skeletal system due to structural or quantitative defects in collagen type I
Definition
Osteogenesis Imperfecta
Term
Fragile bones, blue sclera, and early deafness
Definition
Ostogenesis imperfecta
Term
Multiple osteomas
Definition
Gardener Syndrome
Term
Slow-growing benign tumor located on the subperiosteal or endosteal surfaces of skull or facial bones
Definition
Osteomas
Term
Small (<2cm) benign tumors in the appendicular skeleton; night-time pain that is relieved by ASA
Definition
Osteoid Osteoma
Term
Cause of the pain in Osteoid Osteomas/ the reason the pain is relieved by ASA
Definition
Production of PGE2
Term
Benign bone tumors that produce a dull pain unresponsive to ASA
Definition
Osteoblastoma
Term
Mushroom-shaped bony cartilage-capped growth
Definition
Osteochondroma
Term
Benign tumor of interosseous hyaline cartilage
Definition
Chondroma
Term
Benign, aggressive tumor containing multinucleated giant cells that look like osteoclasts
Definition
Giant Cell Tumor - typically involves the knee
Term
A mesenchymal tumor involving the overproduction of bone matrix
Definition
Osteosarcoma
Term
Painful, aggressively enlargin masses, soft-tissue swelling, Codman's triangle, pulmonary metastases
Definition
Osteosarcoma
Term
Painful, progressively enlarging masses in the central portion of the skeleton including pelvis, shoulders and ribs
Definition
Chondrosarcomas
Term
Enlarged, painful masses in the metaphyses of long bones and plevic flat bones; can occur in bones that were previously irradiated
Definition
Fibrosarcomas + Malignant fibrous histocytomas
Term
5 Most common primary origins of neoplastic metastasis to bone
Definition
Lung, Breast, Thyroid, Kidney, Prostate
Term
Common sites of metastasis to bone
Definition
Axial skeleton and to a lesser extent the proximal appendicular bones
Term
Bony tumor seen in kids that presents with painful, enlarging masses and local tenderness and swelling accompanied by fever, elevated ESR, anemia and leukocytosis (elevated WBC count)
Definition
Ewing Sarcoma/ Primitive Neuroectodermal Tumors (PNET)
Term
Avascular necrosis of the femoral head in kids <15 years old
Definition
Legg-Calve-Perthes Disease
Term
Grade I Legg-Calve-Perthes Ds
Definition
Less than 1/3 of epiphysis involved, cystic appearance, epiphyseal height maintained, viable tongue of epiphysis
Term
Grade II Legg-Calve-Perthes Ds
Definition
Rarified bone, avascular segment, Gage's Sign (a small osteoporotic region on radiographs that forms a transradiant V on the lateral side of the epiphysis), Metaphyseal rarefaction
Term
Grade III Legg-Calve-Perthes Ds
Definition
Most of the epiphysis is avascular, viable bone posterior and anterior, metaphyseal changes
Term
Grade IV Legg-Calve-Perthes Ds
Definition
Total epiphyseal involvement, diffuse metaphyseal changes, no viable bone posterior, epiphyseal consolidation
Term
Degeneration/ aseptic necrosis of a portion of bone or growth center followed by reossificaion
Definition
Osteochondritis dissicans - commonly involves the femoral condyle in the knee
Term
Gradual onset of vague pain in jt, catching/ locking of the joint, possibly jt effusion
Definition
Osteochondritis dissicans
Term
Swelling, tenderness and increased prominence of the tibial tubercle
Definition
Osgood-Schlatter Ds
Term
Vascular infarction leading to the cellular death of bone tissue
Definition
Osteonecrosis
Term
COL2A1
Definition
Defect in this gene (for type II collagen) is seen in familial cases of osteonecrosis
Term
"Creeping Substitution"
Definition
The process of new bone laid down on the scaffolding of old dead bone in osteonecrosis
Term
A young, female patient presents with a butterfly rash, fever, jt pain, pleuritic pain and photosensitivity
Definition
SLE - may also have oral ulcers, pericarditis, proteinuria, seizures/ psychosis, hemolytic anemia, leukopenia, etc.
Term
Test for ANA, dsDNA, Smith, SSA and SSB antibodies
Definition
Dx testing for SLE
Term
Acute onset of tender, nodular, erythematous eruption usually found on the extensor aspects of the LEs
Definition
Erythema nodosum - associated with sarcoidosis
Term
Pathogenesis of Scleroderma
Definition
Abnormal immune response from CD4 T cells and TH2 cells - abnl secretion of growth factors & cytokines, t-cell mediated fibrogenesis and vascular injury, abnl humeral response
Term
Wide-spread skin thickening and rapid progression to fibrosis of visceral organs (GI, heart, kidneys, skeletal muscle and lungs)
Definition
Diffuse Scleroderma
Term
CREST Syndrome
Definition
Calcinosis, Raynaud's Synd., Esophageal dysmotility, Sclerodactyly, Telangectasisa --seen in limited scleroderma
Term
Skin thickening confined to fingers, forearms and face, accompanied by CREST Syndrome
Definition
Limited Scleroderma
Term
ANA, anticentromere antibodies
Definition
Seen in patients with Limited Scleroderma
Term
Anti-Scl70
Definition
Seen in patients with Diffuse Scleroderma
Term
Generalized mm. pain increased with exertion, fatigue, perception of swollen jt not present on PE
Definition
Fibromyalgia
Term
Increase tryptophan containing foods
Definition
May help prevent fibromyalgia flares
Term
Pain/ stiffness in the neck, shoulders and pelvic region, low-grade fever and weight loss, malaise, arthralgias & myalgias
Definition
Polymyalgia rheumatica
Term
ESR > 50 mm/h with normochromic, normocytic anemia
Definition
Seen in 50% of polymyalgia rheumatica patients
Term
Often associated with Giant Cell Arteritis
Definition
Polymyalgia rheumatica
Term
Often associated with Polymyalgia rheumatica
Definition
Giant Cell Arteritis
Term
Treatment for sarcoidosis
Definition
First line- glucocorticoids; second line- methotrexate (MTX)
Term
Insidious onset of shortness of breath, cough, chest pain and hemoptysis; may also see constitutional s/s, eye involvement, splenomegaly & hepatomegaly
Definition
Sarcoidosis
Term
Associated with Sarcoidosis
Definition
Erythema nodosum
Term
AL
Definition
Light chain amyloid - derived from plasma cells and contains immunoglobulin light chains
Term
AA
Definition
Amyloid associated protein - secreted by liver
Term
Primary Amyloidosis
Definition
Involves AL and immunocyte dyscrasias
Term
Secondary Amyloidosis
Definition
Involves AA; reactive amyloidosis due to chronic disease
Term
Congo Red Staining
Definition
Performed on bx specimens to dx amyloidosis
Term
Housemaid's Knee
Definition
Prepatellar bursitis
Term
Weaver's bottom
Definition
Ischial bursitis
Term
Tennis Elbow
Definition
Lateral Epicondylitis
Term
Golfer's Elbow
Definition
Medial Epicondylitis
Term
Pain in elbow with wrist extension
Definition
Lateral epicondylitis (tennis elbow)
Term
Pain in elbow with wrist flexion
Definition
Medial epicondylitis (golfer's elbow)
Term
Tendinitis
Definition
Tendon inflammation
Term
Tendinosis
Definition
Tendon degeneration
Term
Pain and tenderness localized to the radial aspect of the wrist, pain with thumb movement
Definition
Tenosynovitis (DeQuervain's tenosynovitis)
Term
Inflammation of the thin inner synovial lining surrounding the tendons of the adductor policis longus and extensor policis brevis as they pass thru a common sheath at the base of the thumb and distal end of the radius
Definition
DeQuervain's tenosynovitis
Term
Most common form of systemic vasculitis in adults
Definition
Giant Cell Arteritis
Term
Granulomatous inflammation of the media, fragmentation of the interal elastic membrane and mononuclear infiltrate with multinucleated giant cells and langhans cells of medium and large sized arteries (aorta, temporal a., etc.)
Definition
Giant Cell Arteritis
Term
Necrotizing vasculitis of arterioles, capillaries and venules (commonly involves the lung and kidney)
Definition
Microscopic polyangitis
Term
p-ANCA
Definition
Microscopic polyangitis
Term
Fever, wt loss, muscle pain, rapidly progressing renal disease, hemoptysis
Definition
Microscopic polyangitis
Term
Necrotizing vasculitis of small and medium sized vessels, typically involves renal and other visceral organs (NO lung involvement)
Definition
Polyarteritis Nodosa (PAN)
Term
Hypergammaglobulinemia and positive Hep B surface antigens in 30% of patients
Definition
Polyarteritis nodosa
Term
Pathogenesis of polyarteritis nodosa
Definition
PMNs infiltrate all layers of a vessel and perivascular areas, intimal proliferation and degeneration of the vascular wall, fibroid necrosis, luminal compromise, thrombosis and infarction/ hemorrhage of the vessel; healing involves collagen deposition and aneurysmal formation
Term
A widespread granulomatous inflammatory reaction leading to stenosis in the walls of medium and large size vessles (typically involves the aortic arch and its branches)
Definition
Takayasu Arteritis
Term
Disease progresses rapidly at first, then halts after 1-2 years, alowing for long-term survival
Definition
Takayasu Arteritis
Term
A necrotizing vasculitis most commonly affecting the respiratory and renal systems
Definition
Wegener's Granulomatosis
Term
Triad of acute necrotizing granulomas of the mucosa in the upper and lower respiratory tract, necrotizing granulomatous vasculitis affecting small to medium sized vessels,and focal necrotizing renal disease
Definition
Wegener's Granulomatosis
Term
c-ANCA
Definition
Wegener's Granulomatosis
Term
Fever, malaise, weakness, arthralgias, anorexia + wt loss, persistent pneumonia, chronic sinusitis
Definition
Wegener's granulomatosis
Term
A small, firm nodule in ther dermis or subcutaneous tissue, typically occurring in mid-adult life
Definition
Benign Fibrous Histiocytoma
Term
Slowly progressing contracture of the palmar fascia in the hand
Definition
Dupuytren's contracture - a form of fibromatosis
Term
Rare, aggressive neoplasm of the soft tissue
Definition
Fibrosarcoma
Term
Benign tumor of fat
Definition
Lipoma - soft, mobile and painless
Term
Malignant tumor of fat
Definition
Liposarcoma - one of the most common sarcomas of adulthood
Term
An aggressive, malignant tumor that usually arises in the musculature of the proximal extremities or in the mediastinum
Definition
Malignant fibrous histiocytoma
Term
Fibrotic proliferation and formation of metaplastic bone in skeletal muscle (usually following a trauma)
Definition
Myositis ossificans
Term
Patient initially presents with an area of pain and swelling in the muscle, that evolves into a painless mass and may eventually calcify to become a painful mass in the muscle
Definition
Myositis ossificans
Term
Patient presents between ages 3 and 5 with delayed motor milestones with progressively worsening loss of strength and Gower's Sign, and joint contractures
Definition
Duchenne's Muscular Dystrophy
Term
Dx of Duchenne's Muscular Dystrophy
Definition
Serum CK levels, EMG and a bx (Western blot demonstrating decreased dystrophin)
Term
A less common, later onset and slower progressing form of muscular dystrophy than Duchenne's Muscular Dystrophy
Definition
Becker Muscular Dystrophy
Term
Most common adult muscular dystrophy
Definition
Myotonic Dystrophy
Term
Associated with a trinucleotide CTG repeat expansion on chr. 19 (the DMPK gene)and anticipation
Definition
Myotonic dystrophy
Term
Insidious onset of gait abnormalities in late childhood, sustained muscular contractions, progresses to weakness in the hands and then face, frontal balding, ptosis and "hatchet-face"
Definition
Classic form (DM1) of Myotonic Dystrophy
Term
"Hatchet Face"
Definition
Associated with Myotonic Dystrophy - a narrowing of the face due to loss of mass in the masster mm.
Term
Patient has normal or slightly elevated CK levels and EMG changes; bx reveals nuclei positioned centrally in m. fibers
Definition
Centronuclear Myopathy
Term
Reason the nucleus is in the center of the m. in Centronuclear Myopathy
Definition
Most likely involves a defect in the cytoskeleton of the m. cells, preventing marginalization of the nucleus
Term
Severe hypotonia and weakness at birth
Definition
Neonatal form of centronuclear myopathy
Term
Delayed motor milestones, marfanoid body type
Definition
Late Infancy- Early Childhood form of Centronuclear Myopathy
Term
Onset of mild, non-progressive limb weakness in the second or third decade of life
Definition
Late childhood- Early Adult form of Centronuclear Myopathy
Term
A chronic inflammatory myopathy that also involves dermatologic manifestations
Definition
Dermatomyositis
Term
Heliotropic rash in upper eyelids and periorbital edema that can worsen with sun exposure, B/L symmetrical proximal muscle weakness, erythema of knuckles with raised scaly eruptions (Grotton Lesions)
Definition
Dermatomyositis
Term
Anti-Jo1 Antibody
Definition
Seen in pts with Polymyositis and Dermatomyositis (more specific for PM than DM)
Term
Lab studies for Dermatomyositis
Definition
CPK, Aldolase, LDH, SGOT, SGPT, RF, ANA, Anti-Jo1, Anti-pMi-2,Anti-SRP
Term
Symmetric proximal muscle weakness in the UE and LE, muscle pain/ tenderness, fatigue
Definition
Polymyositis
Term
Lab Studies for Polymyositis
Definition
Serum CK, LDH, Alanine Aminotransferase, Aldolase, CBC (leukocytosis or thrombocytosis), elevated ESR, ANA positive in 1/3 of patients, Anti-Jo1, Anti-signal recognition particles (Anti-SRP)
Term
Weakness, poor endurance, discomfort, exertional dyspnea and tachycardia
Definition
S/S of Mitochondrial Myopathy - mitochondrial myopathy is a myopathy due to mutations occurring in the mitochondrial genome
Term
A benign tumor of smooth m.
Definition
Leiomyoma - think uterine fibroids
Term
Most common neoplasm in women
Definition
Leiomyoma
Term
A malignant tumor of smooth muscle
Definition
Leiomyosarcoma
Term
Most common site for leiomyosarcomas
Definition
Retroperitoneum or intra-abdominal; other common places include skin and deep soft tissue of extremities (typically associated wtih vv.)
Term
Rare, aggressive, malignant tumors of skeletal m.
Definition
Rhabdomyosarcoma
Term
Most common soft tissue sarcoma of childhood and adolescence
Definition
Rhabdomyosarcoma
Term
3 Subtypes of Rhabdomyosarcoma
Definition
1)embryonal (most common); 2)alveolar; 3)pleimorphic
Term
PAX3- FKHR gene fusion dysregulating m. differentiation
Definition
Pathogenesis of Rhabdomyosarcoma
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