Classic Presentations Flashcards
(131 cards)
Gout, intellectual disability, self-mutilating behavior in a boy
Lesch-Nyhan syndrome
- HGPRT deficiency, XR
Situs inversus, chronic sinusitis, bronchiectasis, infertility
Kartegener syndrome
- dynein arm defect affecting cilia
Blue sclera
Osteogenesis imperfecta
- Type I collagen defect
Elastic skin, hypermobility of joints, increased bleeding tendency
Ehlers-Danlos syndrome
- Type V collagen defect
- Type III collagen defect in vascular subtype
Arachnodactyly, lens dislocation (upwward), aortic dissection, hyperflexible joints
Marfan Syndrome
- fibrillin defect
Cafe-au-lait spots (unilateral), polyostotic fibrous dysplasia, precocious puberty, multiple endocrine abnormalities
McCune-Albright syndrome
- mosaic G-protein signaling mutation
Calf pseudohypertrophy
Muscular Dystrophy
- most commonly: Duchenne
- XR frameshift mutation of dystrophin gene
Child uses arms to stand up from squat
Duchenne muscular dystrophy
- Gower sign
Slow, progressive muscle weakness in boys
Becker Muscular Dystrophy
- X-linked missense mutation in dystrophin
- less severe than Duchenne
Infant with cleft lip/palate, microcephaly or holoprosencephaly, polydactyly, cutis aplasia
Patau syndrome
- trisomy 13
Infant with microcephaly, rocker-bottom feet, clenched hands, and structural heart defect
Edwards syndrome
- trisomy 18
Single palmar crease
Down syndrome
Dilated cardiomyopathy, edema, alcoholism, or malnutrition
Wet beriberi
- thiamine (vit B1) deficiency
Dermatitis, dementia, diarrhea
Pellagra
- niacin (vit B3) deficiency
Swollen gums, mucosal bleeding, poor wound healing, petechiae
Scurvy
- vitamin C deficiency
- can’t hydroxylate proline/lysine for collagen synthesis
Chronic exercise intolerance with myalgia, fatigue, painful cramps, myoglobulinuria
McArdle Disease
- skeletal muscle glycogen phosphorylase deficiency
Infant with hypoglycemia, hepatomegaly
Cori Disease - debranching enzyme defiency OR Von Gierke Disease (more severe) - glucose 6-phosphatase deficiency
Myopathy (infantile hypertrophic cardiomyopathy), exercsie intolerance
Pompe disease
- lysosomal alpha-1,4-glucosidase deficiency
“cherry-red spots” on macula
Tay-Sachs - ganglioside accumulation OR Niemann-Pick - sphingomyelin accumulation OR Central retinal artery occlusion
Hepatosplenomegaly, pancytopenia, osteoporosis, aseptic necrosis of femoral head, bone crises
Gaucher disease
- Glucocerebroside deficiency
Achilles tendon xanthoma
Familial hypercholesterolemia
- decreased LDL receptor signaling
Anaphylaxis following blood transfusion
IgA deficiency
Male child, recurrent infections, no mature B cells
Bruton Disease
- X-linked agammaglobulinemia
Recurrent cold (noninflamed) abscesses, unusual eczema, high serum IgE
Hyper-IgE syndrome
- Job syndrome
- neutrophil chemotaxis abnormality