Classic Presentations - 1 Flashcards
gout, intellectual disability, self-mutilating behavior in a boy
Lesh-Nyhan (HGPRT def, X-linked recessive)
situs inversus, chronic sinusitis, bronchiestasis, infertility
kartagener syndrome (dynein arm defect affecting cilia)
blue sclera
osteogenesis imperfecta (type I collagen defect)
elastic skin, hypermobility of joints, inc bleeding tendency
ehlers-danlos (type IV collagen defect)
arachnodactyly, lens dislocation (upward), aortic dissection, hyperflexible joints
marfan syndrome
cafe-au-lait spots, polyostotic fibrous dysplasia, precocious puberty, multiple endocrine abnormalities
mcCune-albright (mosaic G-protein signaling mut)
calf pseudohypertrophy
muscular dystrophy (duchenne - due to XLR frameshift mut of dystrophin gene)
child uses arms to stand up from squat
gowers sign - duchenne
slow progressive muscle weakness in boys
becker muscular dystrophy (X-linked missense mut in dystrophin)
infant w/ cleft lip/palate, microcephaly or holoprosencephaly, polydactyly, cutis aplasia
Patau syndrome (trisomy 13)
infant w/ microcephaly, rocker-bottom feet, clenched hands, structural heart defect
edwards syndrome (trisomy 18)
single palmar crease
down syndrome
dilated cardiomyopathy, edema, alcoholism or malnutrition
wet beri beri (thiamine (B1) def)
dermatitis, diarrhea, dementia
pellagra (niacin (B3) def)
swollen gums, mucosal bleeding, poor wound healing, petechiae
scurvy - vit C def - can’t hydroxylate proline/lysine for collagen synthesis
chronic exercise intolerance w/ myalgia, fatigue, painful cramps, myoglobinuria
McArdle disease - skeletal muscle glycogen phosphorylase def
infant w/ hypoglycemia, hepatomegaly
cori disease (debranching enzyme) or von gierke disease (G6P) - more severe
myopathy (infantile hypertrophic cardiomyopathy), exercise intolerance
pompe disease - lysosomal a-1,4-glucosidase def
cherry red spots on macular
Tay sachs (ganglioside accumulation) or niemann-pick (sphingomyelin occlusion), or central retinal artery occlusion
hepatosplenomegaly, pancytopenia, osteoporosis, aseptic necrosis of femoral head, bone crises
gaucher disease (glucocerebrosidase def)
achilles tenon xanthoma
familial hypercholesterolemia (dec LDL receptor signaling)
anaphylaxis following blood transfusion
IgA deficiency
male child, recurrent infections, no mature B cells
Bruton - X-linked agammaglobulinemia
recurrent non-inflammed abscesses, unusual eczema, high serum IgE
hyper IgE syndrome - PMN chemotaxis abnormality
strawberry tongue
scarlet fever or kawasaki dz
adrenal hemorrahge, hTN, DIC
waterhouse-friderichsen syndrome (meningococcemia)
red “currant jelly” sputum in alcoholic or diabetic pts
klebsiella pneumonia
large rash w/ bull’s eye appearance
lyme disease - erythema chronicum migrans