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Musculoskeletal, Skin and CT
Pathology
102
Pathology
Graduate
01/17/2014

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Cards

Term
achondroplasia
- cause
- symptoms
Definition
- FGFR3 inhibits chondrocyte proliferation so no endochondral ossification
- large head, dwarfism, normal life span and fertility
Term
type I vs type II osteoporosis
Definition
type I = posmenopausal; inc bone resorption due to dec estrogen
tpe II = effects men and women > 70
Term
osteoporosis
Definition
trabecular bone loss mass and interconnections despite normal bone mineralization and labs
Term
acute back pain, loss of height, kyphosis
Definition
vertebral crush fractures
Term
colle's fracture
Definition
distal radius
Term
osteoporosis
- prophylaxis
- treatment
Definition
- exercise and Ca ingestion
- bisophosphonates, estrogen, calcitonin or pulsatile PTH
Term
osteopetrosis
Definition
failure of bone resorption due to deficiency of CA II
Term
symptoms of osteopetrosis
Definition
marble bones, dec marro space -> pancytopenia, inc infection; inc extra medullary hepatopoiesis; XR = erlenmeyer flast bones; CN impingement and palsies
Term
osteomalacia/ricets
Definition
Vit D deficiency -> defective mineralization of osteoid -> soft bones
Term
pager's disease
- cause
- symptoms
Definition
- inc both osteoblastic and osteoclastic, may be related to paramyxovirus
- chalk stick fracture, high-output cardiac failure; inc hat size, hearing loss
Term
lab values:
- osteoporosis
- osteopetrosis
- osteomalacia/rickets
- osteitis fibrosa cystica
- pagets
Definition
- normal
- normal
- dec= ca and phos; inc= PTH
- dec= phos; inc= Ca, ALP, PTH
- inc ALP
Term
polyostotic fibrous dysplasia
Definition
bone replaced by fibroblasts, collagen, and irregular bony trabeculae
Term
McCune-Albright
Definition
polyostotic fibrous dysplasia, precocious puberty and cafe-au-lait spots
Term
giant cell tumor
- epidemiology
- location
- characteristics
Definition
- 20-40 y/o
- epiphyseal end of long bones
- double bubble, spindle shaped cells with multinucleate giant cells
Term
osteochondroma
- epidemiology
- location
- characteristics
Definition
- most common benign tumor, men <25
- long metaphysis
- mature bone with cartilaginous cap
Term
osteosarcoma
- epidemiology
- predisposing factors
- location
- characteristics
Definition
- 2nd most common 1' malignant bone tumor, men 10-20
- Paget's, bone infarcts, radiation, familial retinoblastoma
- metaphysics of long bones, knee
- codman's triangle or sunburst patter on XR
Term
ewings sarcoma
- epidemiology
- location
- characteristics
Definition
- boys <15 y/o
- diaphysis of long bones, pelvis, scapula and ribs
- small blue cell, aggressive, onion skin in bone, t(11;22)
Term
chondrosarcoma
- epidemiology
- location
- characteristics
Definition
- men 30-60
- pelvis, spine, scapula, humerus, tibia, or femur
- 1' origin, expansile glistening mass within the medullary cavity
Term
OA cause
Definition
wear and tear of joints leads to destruction of articular cartilage, subchondral cysts, sclerosis, osteophytes, eburnation
Term
Heberden's nods
Definition
OA in DIP
Term
bouchard's nodes
Definition
OA in PIP
Term
OA predisposing factors
Definition
age, obesity joint deformity
Term
OA presentation
Definition
pain in weight-bearing joints after use, improving with rest; noninflammatory no systemic symptoms
Term
RA
- cause
- location
Definition
- autoimmune, Type III HSR with +rheumatoid factor; anti-CCP
- MCP, PIP, behind knee = Baker's, ulnar deviation, rheumatoid nodules
Term
HLA with RA
Definition
DR4
Term
RA presentation
Definition
morning stiffness lasting > 30 min and improves with use, symmetric joint involvement, systemic symptoms = fever, fatigue, pleuritis, pericarditis
Term
RA treatment
Definition
NSAIDS, COX2 inhibitors, DMARDS
Term
sjogrens
- triad
- other symptoms
- Ab
Definition
- xeropthalmia, xerostomia, arthritis
- parotid enlargement, inc risk of B cell lymphoma, dental carries
- SS-A (Ro) and SS-B (La)
Term
Sicca syndrome
Definition
drys eyes, dry mouth, nasal and vaginal dryness, chronic bronchitis, refulx esophagitis; NO ARTHRITIS
Term
Gout
- causes
- findings
- symptoms
Definition
- Lesch-Nyhan, PRPP excess, dec excretion, inc cell turnover, Von-Gierke's
- needle shaped crystals with neg birefringetn (yellow when parallel)
- asymmetric joint, swollen red and painful; MTP of big toe = podagra
Term
tophus formation
Definition
external ear, olecranon bursa or achilles
Term
acute gout attack precipitants
Definition
large meal or alcohol consumption
Term
pseudogout
- crystals
- symptoms
Definition
- calcium pyrophosphate; positive birefringenet, basophilic rhomboid
- large joints (knee) <50
Term
septic arthritis
Definition
S aureus, streptococcus, N gonorrhea
swollen, red and painful
Term
chronic infectious arthritis
Definition
TB, lyme disease
Term
HLA with seroneg spondyloarthropaties
Definition
B27
Term
psoriatic arthritis
Definition
asymmetric; dactylitis; "pencil in cup" deformity on XR; <1/3 of psoriasis pts
Term
ankylosing spondylitis
Definition
spine and sacroiliac fusion; uveitis, aortic regurg
Term
reactive arthritis
Definition
conjunctivitis and ant uveitis (can't see), urethritis (can't pee), arthritis (can't climb a tree)
Term
SLE
- epidemiology
- symptoms
- labs
Definition
- 90% female, black age 14-15
- fever, fatigue, weight loss, LIbman Sacks, LAD, raynauds, wire-lop lesion in kidney
- ANA, anti-dsDNA, anti-smith, antihistone, false+ VRDL
Term
polymyalgia rheumatica
- symptoms
- findings
- treatment
Definition
- pain and stiffness in proximal joints with fever, malaise and weight loss; with temporal arteritis
- inc ESR, normal CK
- prednisone
Term
fibromyalgia
Definition
women 30-50; MSK pain with stiffness, parasthesia, poor sleep and fatigue; >11/18 points
Term
polymyositis
Definition
symmetric prox mm weakness by CD8 T cell injury of myofibers;
Term
dermatomyositis
Definition
polymyositis with malar rash, gottran's papules, heliotrope rash, "shawl and face" rash, "mechanic's hands"; perifascicular atrophy
Term
lab findings in polymyositis and dermatomyositis
- tx
Definition
inc CK, inc aldolase, +ANA and anti-Jo-1
- steroids
Term
myasthenia gravis
Definition
most common; auto-Ab to AchR -> ptosis, diplopia and general weakness; thymoma; AchE inhibitors; worse with use
Term
lambert-eaton syndrome
Definition
auto-Ab to Ca channels; small cell lung; improves with use; no reversal with AchE inhibitors
Term
lambert-eaton syndrome
Definition
auto-Ab to Ca channels; small cell lung; improves with use; no reversal with AchE inhibitors
Term
diffuse scleroderma
Definition
widespread skin involvement, rapid progression ,early visceral involvement, Scl-70 (anti-topoisomerase I)
Term
CREST scleroderma
Definition
calcinosis, anticentromere Ab, raynaud's, esohpageal dysmotility, sclerodactyly, telangiectasia; confined to fingers and face more benign
Term
scleroderma
Definition
excessive fibrosis and collagen deposition throughout body; puffy and taut skin with absence of wrinkles; sclerosis of renal, pulmonary cardiovascular and GI symptoms
Term
macule
Definition
flat < 1cm
Term
patch
Definition
macule > 1cm
Term
papule
Definition
elevated <1 cm
Term
plaque
Definition
papule > 1cm
Term
vesicle
Definition
small fluid containing blister
Term
wheal
Definition
transient vesicle
Term
bulla
Definition
large fluid containing blister
Term
keloid
Definition
irregular raised lesion resulting from scar hypertrophy on skin in blacks
Term
pustule
Definition
blister containing pus
Term
crust
Definition
dried exudates from a vesicle, bulla or pustule
Term
hyperkeratosis
Definition
inc thickness of stratum corneum
Term
parakeratosis
Definition
hyperkeratosis with retention of nuclei in stratum corneum
Term
acantholysis
Definition
separation of epidermal cells
Term
acanthosis
Definition
epidermal hyperplasia
Term
dermatitis
Definition
inflammation of skin
Term
verrucae
Definition
arts, cauliflower like; hyperkeratosis with koilocytosis; condyloma aluminum on genitals
Term
nevocellular nevus
Definition
common mole; benign
Term
urtricaria
Definition
hives; pruritic wheals that form after mast cell degranulation
Term
atopic dermatitis
Definition
pruritic eruption on skin flexures; with asthma and allergic rhinitis
Term
contact dermatitis
Definition
type IV HSR following allergen like nickel or poison ivy
Term
psoriasis
- skin
- layers
- sign
- associated with
Definition
- silvery scaling on knees and elbows with parakeratotic scaling; munro micro abscesses
- inc spinsoum and dec granulosum
- Auspitz = bleeding when scraped off
- nail pittin and arthritis
Term
seborrheic keratosis
Definition
flat greasy pigmented epithelial prolix with keratin filled cysts; look passed on on head, trunk and extremities
Term
leser trelat
Definition
sudden appearance of multiple seborrheic keratoses with underlying malignancy
Term
albinism
Definition
dec melanin production due to dec tyrosinas; failure of NC cell migration in development
Term
vitiligo
Definition
areas of complete depigmentation by dec in melanocytes
Term
melasma
Definition
hyperpigmentation in pregnancy or OCP use
Term
impetigo
Definition
superficial skin infection by S aureus and S progenies; honey colored crusting
Term
cellulitis
Definition
acute painful spreading infection of dermis and subcutaneous tissues; S progenies or S aureus
Term
necrotizing fasciitis
Definition
deeper tissue injury usually from anaerobic bacteria and S progenies; crepitus from methane and CO2 production
Term
scalded skin syndrome
Definition
exotoxin destroys keratinocyte attachments in granulosum; fever, erythematous rash with sloughing of upper layers of epidermis in newborns and children
Term
hairy leukoplakia
Definition
white painless plaques on tongue that can't be scraped off; EBV; in HIV patients
Term
IgG to desmosomes
Definition
pemphigus vulgaris
Term
IF of pemphius vulgaris
Definition
netlike pattern
Term
positive Nikolsky's sign
Definition
separation of epidermis upon manual stroking of skin; with pemphigus vulgarism
Term
IgG to hemidesmosomes
Definition
bullous pemphigoid
Term
IF of bullous pemphigoid
Definition
linear
Term
what cell type is in the blisters of bullous pemphigoid?
Definition
eosinophils
Term
IgA on dermal papillae
Definition
dermatitis herpetiformis; with celiac
Term
erythema multiforme
Definition
infections (M pneumo, HSV), drugs (sulfa, beta lactam, phenytoin), cancers and uatoimmune; multiple types of lesions
Term
stevens johnson syndrome
Definition
fever, bulla formation and necrosis, sloughing of skin and high mortality rate; drug reaction; severe= toxic epidermal necrolysis
Term
lichen planus
Definition
pruritic, purple, polygonal papules; sawtooth infiltrate of lymphocytes at dermal-epidermal junction with HCV
Term
actinic keratosis
Definition
sun exposure; small, rough erythematous or brownish papules; "cutaneous horn"
Term
acanthosis nigricans
Definition
hyperplasia of spinosum; with hyperinsulinemia, Cushings and visceral malignancy
Term
erythema nodosum
Definition
subcutaneous fat inflammation usually on anterior shins
Term
what is erythema nodosum associated with?
Definition
coccidio, histo, TB, leprosy, strep, sarcoidosis
Term
pityriasis rosea
Definition
"herald patch" followed days later by "christmas tree" distribution; multiple papular eruptions
Term
erythema nodosum
Definition
subcutaneous fat inflammation usually on anterior shins
Term
skin cancer
- order of prevalence
- order of metastasis likelihood
Definition
- BCC, SCC, melanoma
- melanoma, SCC, BCC
Term
SCC
- causes
- locations
- histopath
Definition
- excessive exposure to sunlight and arsenic
- hands and face
- keratin "pearls"
Term
BCC
- cause
- location
- histopath
Definition
- sunexposure
- upper lip
- pearly papules with telangiectasia; palisading nuclei
Term
melanoma
- tumor marker
- risk for metastasis
- characteristics
Definition
- S100
- Inc risk with inc depth of tumor
- Asymmetry, Border, Color, Diameter
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