Classic Presentations Flashcards
Gout, intellectual disability, self mutilating behavior in a boy
Lesch-Nyhan Syndrome (HGPRT deficiency, X-linked recessive)
Situs inversus, chronic ear infections, sinusitus, bronchiectasis, infertility
Kartagener syndrome (dynein arm defect affecting cilia)
Blue sclera
Osteogenesis imperfecta (type I collagen defect)
Elastic skin, hypermobility of joints, ^ bleeding tendency
Ehlers Danlos syndrome (type V collagen defect type III collagen defect seen in vascular subtype of ED)
Arachnodactyly, lens dislocation (upward and temporal), aortic dissection, hyperflexible joints
Marfan syndrome (fibrillin defect)
Arachnodactyly, pectus deformity, lens dislocation (downward)
Homocystinuria (autosomal recessive)
Cafe- au-lait spots (unilateral), polyostotic fibrous dysplasia, precocious puberty, multiple endocrine abnormalities
McCune-Albright syndrome (Gs-protein activating mutation)
Meconium ileus in neonate, recurrent pulmonary infections, nasal polyps, pancreatic insufficiency, infertility/subfertility
Cystic Fibrosis (CFTR gene defect, chromosome 7, Phe 508 deletion)
Calf pseudohypertrophy
Muscular dystrophy (most commonly Duchenne, due to X-linked recessive framseshift mutation of dystrophin gene)
Child uses arms to stand up from squat
Duchenne muscular dystrophy (Gowers signs)
Slow, progressive muscle weakness in boys
Becker muscular dystrophy (x-linked non frameshift deletions 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.
Edward Syndrome (trisomy 18)
Single palmar crease
Down Syndrome
Confusion, ophthalmoplegia/nystagmus, ataxia
Wernicke encephalopathy
Dilated cardiomyopathy/high output heart failure, edema, alcoholism or malnutrition
Wet beriberi (thiamine [vitamin B1] deficiency)
Burning feet syndrome
Vitamin B5 deficiency
Dermatitis, dementia, diarrhea
Pellagra (niacin [vitamin B3] deficiency)
Swollen gums, mucosal bleeding, poor wound healing, petechiae
Scurvy (vitamin C deficiency: can’t hydroxylate proline/lysine for collagen synthesis); tea and toast diet
Bowlegs in children, bone pain and muscle weakness
Rickets (children), osteomalacia (adults), vitamin D deficiency
Hemorrhagic disease of newborns with increase PT, increase PTT
Vitamin K deficiency
Bluish black connective tissue, ear cartilage, sclerae; urine turns black on prolonged exposure to air
Alkaptonuria (homogentisate oxidase deficiency; ochronosis)
Chronic exercise intolerance with myalgia, fatigue, painful cramps, myoglobinuria
McArdle disease (skeletal muscle glycogen phosphorylase deficiency)
Infant with hypoglycemia, hepatomegaly
Cori disease (debranching enzyme deficiency) or Von Gierke disease (glucose 6 phosphatase deficiency, more severe)
Myopathy (infantile hypertrophic cardiomyopathy), exercise intolerance
Pompe disease (lysosomal alpha-1, 4-glucosidase deficiency)
Cherry red spots on macula
Tay-sachs (ganglioside accumulation) or Niemann pick (sphingomyelin accumulation), central retinal artery occlusion
Hepatosplenomegaly, pancytopenia, osteoporosis, avascular necrosis of femoral head, bone crises
Gaucher disease (glucocerebrosidase [B-glucosidase] eficiency)
Achilles tendon xanthoma
Familial hypercholesterolemia ( v LDL receptor signaling)
Recurrent Neisseria infection
Terminal complement deficiencies (C5-C9)
Anaphylaxis following blood transfusion
IgA deficiency
Male child, recurrent infections, no mature B cells
Bruton disease (X-liked agammaglobulinemia)
Recurrent cold (noninflamed) abscess, eczema, high serum IgE, ^ eosinophils
Hyper IgE syndrome (Job syndrome: neutrophil chemotaxis abnormality)
Late separation )>30 days)of umbilical cord, no pus, recurrent skin and mucosal bacterial infections
Leukocyte adhesion deficiency (type 1, defective LFA-1 integrin)
Recurrent infections and granulomas with catalase + organisms
Chronic granulomatous disease (defect of NAPDH oxidase)
Fever, vomiting, diarrhea, desquamating rash following use of nasal pack or tampons
Staphylococcal toxic shock syndrome
Strawberry tongue
Scarlet fever
Kawasaki disease
Colon cancer diagnosed a few years after endocarditis
Streptococcus bovis
Abdominal pain, diarrhea, leukocytosis, recent antibiotic use
Clostridium difficile infection
Flaccid paralysis on newborn after ingestion of honey
Clostrodium botulinum infection (floppy baby syndrome)
Tonsillar pseudomembrane with bulls neck appearance
Corynebacterium diphtheria infection
Back pain, fever, night sweats
Pott disease (vertebral TB)
Adrenal insufficiency, fever, DIC
Waterhouse - Friederichsen syndrome (meningococcemia)
Red “currant jelly” sputum in patients with alcohol overuse or diabetes
Klebsiella pneumoniae pneumonia
:arge rash with bull’s eye appearance
Erythema migrans from Ixodes tick bite (lyme disease: Borrelia)
Ulcerated genital lesion
Nonpainful, indurated: chancre (1º syphilis, Treponema pallidum)
Painful, with exudate: chancroid (Haemophilus ducreyi)
Pupil accommodates but doesn’t react to light
Neurosyphilis (Argyll Robertson pupil)
Smooth, moist, painless, wart-like white lessions on genitals
Condylomata lata (2º syphilis)
Fver, chills, headache, myalgia following antibiotic treatment for syphilis.
Jarisch-Herxheimer reaction (due to host response to sudden release of bacterial antigens)
Dog or cat bite resulting in ifection (cellulitis, osteomyelitis)
Pasteurella multocida (cellulitis at inoculation site)
Atypical “walking pneumonia” with x-ray looking worse that the patient
Mycoplasma pneumoniae infection
Rash on palms and soles
Coxsackie A, 2º syphilis, Rocky Mountain spotted fever
Black Eschar on face of patient with diabetic ketoacidosis and/or neutropenia
Mucor or Rhizopus fungal infection
Chorioretinitis, hydrocephalus, intracranial calcifications
Congenital toxoplasmosis
Pruritus, serpiginous rash after walking barefoot
Hookworm (ancylostoma spp, Necator americans)
Child with fever later develops red rash on face that spreads to body
Erythema infectiosum/fifth disease (“slapped cheeks” appearance, caused by parvovirus B19)
Fever, cough, conjunctivitis, coryza, diffuse rash
Measles
Small, irregular red spots on buccal/lingual mucosa with blue-white centers
Koplik spots (measles [rubeola] virus)
Bounding pulses, wide pulse pressure, diastolic heart murmur, head bobbing
Aortic regurgitation
Systolic ejection murmur (crescendo-decrescendo), narrow pulse pressure, pulsus parvus et tardus
Aortic Stenosis
Continuous machine like heart murmur
PDA (close with indomethacin; keep open with PGE analogs)
Chest pain on exertion
Angina (stable: with moderate exertion; unstable: with minimal exertion or at rest)