Robbins Ch 25, 26, 27 - high yield associations Flashcards
indolent leions on face of older man with irregular notched borders and radial growth
lentigo maligna - melanoma
activating BRAF and NRAS muatations
melanoma
most impt factor when evaluating melanoma
depth of invasion - Breslow’s thickness
lesion >6mm, changing in appearance, new onset itching or pain
melanoma
deactivating mutaiton of FGFR3
seborrheic keratosis
appearance of tan/brown, round, flat, coin-like plaques in large numbers
Leser-Trelat Sign - seborrhic keratosis indicating paraneoplastic syndrome
adenexal tumor ass’d with CYLD mutation that appear on forehead and scalp
cylindroma
adenexal tumor with activating CNTNB1 mutations
pliomatricomas
arises from meibomian gland of eyelid
sebacious carinoma
LOF in PTCH
basal cell carcinoma
AD disorder occurin
nevoid basal cell carcinoma syndrome
chronic xs keratin buildup resulting in fishline scales
ichthyosis
pinpoint bleeds when salmon colored lesion is pulled off skin
auspitz sign - psoriasis
granulomatous inflammation that causes caseous fat necrosis and necrotizing vasculitis
erythema induratum
kiolocytosis - halos of pallor surrounding nuclei
warts from HPV
mosaic pattern of newly formed bone
pagets dz
elevated alkaline phosphatase
pagets dz
t(11;22)
ewing sarcoma
cartilagenous cap
osteochondroma
IgG autoantibodies to desmogelin, blisters that easily break
phemphigus vulgairs
IgG autoantibodies to basal keratinocytes in hemidesmosomes, tense bullae that don’t break easily
bullous phemphigoid
net appearance on IHC staning
phemphigus vulgairs
linear pattern on IHC staning at the dermo-epidermal jxn
bullous phemphigoid
onion skinning
Ewing sarcoma
joint mice
OA
swan neck and boutonniere deformities
RA
mets that cause lytic bone lesions
kidney, lung, GI
mets that cause blastic bone lesions
prostatic adenocarcinoma
Ab to Ca channels
lambert-eaton syndrome
mm weakness that gets better with rest & ass’d with SCLC
lambert-eaton syndrome
Ab to AChRs
myasthenia gravis
muscle weakness that gets worse with use & ass’d with thymoma
myasthenia gravis
perifascular atrophy
dermatomyositis
atrophy of type II mm fiber atrophy w/ type I mm fibers spared
ass’d with prolonged corticosteroid use
anti-Jo1 Abs
dermatomyositis
heliotrope rash
dermatomyositis
C5b9 deposits in capillary vessels
dermatomyositis
irregular lucencies with adjacent sclerosis on XRAY
osteonecrosis
dark serpiginous necrotic bone on MRI
osteonecrosis
sunburst or codman’s triangle on xray
osteosarcoma
best radiographic modality to test for soft tissue involvement
MRI
avascular necrosis of the femoral head is d/t insuffiiency of what artery
medial circumflex humoral
crescent sign
osteonecrosis - microfractures accumulating in the dead bone
double line sign
osteonecrosis - seen at the periphery (best with T2 MRI)
rim sign
osteonecrosis - fluid btwn sclerotic borders
herberden and bouchard nodes - dz and location
OA - DIP and PIP
swan neck and boutinnier deformity - dx and location
RA - DIP and PIP
melanocyte hyperplasia restricted to the basal layer that doesn’t darken when exposed to light
lentigo
possible melanoma precursor with acquired NRAS and BRAF mutations
dysplastic nevi