USMLE PATHOLOGY > QUESTIONS & ANSWERS > NBME CBSE ACTUAL EXAM 250+ QUESTIONS & ANSWERS LATEST (USMLE STEP 1) MEDICAL EXAMINATION LATEST UPDA (All)

NBME CBSE ACTUAL EXAM 250+ QUESTIONS & ANSWERS LATEST (USMLE STEP 1) MEDICAL EXAMINATION LATEST UPDATED-JANUARY 2024 A+ GRADE.

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NBME CBSE ACTUAL EXAM 250+ QUESTIONS & ANSWERS LATEST (USMLE STEP 1) MEDICAL EXAMINATION LATEST UPDATED-JANUARY 2024 A+ GRADE. 3 types of benign colonic polyps – ans Hyperplastic polyps (saw-too... thed pattern) Juvenile polyp Peutz-Jeghers polyps 3 types of neoplastic polyps (adenoma) – ans Tubular adenoma (pedunculated, most common) Tubulovillous adenoma (pedunculated) Villous adenoma (sessile, most malignant potential) 6yo boy from Russia with unstable gait and incoordination for 2 weeks. Pale, bulky stools for 4 years and two episodes of bacterial pneumonia and chronic cough since age 1 year. 3%ile for height/weight. Neuro exam shows ataxia, no DTRs, loss of proprioception. Stool shows inc fat concentration. Vitamin deficient? - ansE fragility of erythrocytes (hemolytic anemia) muscle weakness neurodysfunction poor joint sensation and ataxia 6yo boy with recurrent systemic infections with Neisseria meningitidis but healthy otherwise. What lab test is likely to be abnormal in this child? – ans Total hemolytic complement concentration C5-C9 deficiency causes failure of formation of membrane attack complex (MAC) which causes susceptibility to Neisseria 8 weeks after recovering from pneumococcal pneumonia, CXR shows no abnormalities. What allowed this resolution to occur? – ans Maintenance of basement membrane integrity 14yo boy with daily headaches (bilateral aching in temples). "Not been himself", more confused, forgetting things. Clumsy with frequent falls. Broad-based ataxic gait. Slow to answer questions. Chronic abuse of what substance cause these symptoms? – ans Inhaled glue 15yo girl emigrated from India and with several lesions on neck for 2 weeks. Physical exam shows hypopigmented, hypoesthetic area on left side of forehead and 4-cm lesions on neck. Biopsy shows acidfast bacilli. Best explanation why the organism results in dermal rather than visceral infections? - ansTemperature sensitivity Mycobacterium leprae is non-motile acid-fast bacili that likes cool temperature. Reservoirs is amadillos. Cutaneous nodules with hypopigmentation, erythematous plaques with central hypopigmentation, peripheral neuropathy, lion-like facies 16yo girl with intermittent fainting while standing. Plasma studies show undetectable NE/Epi concentration and marked increase in dopamine concentration when rising from a supine position to standing Deficiency in what enzyme? – ans Dopamine B-hydroxylase A rare form of dysautonomia. Dopamine is released as a false neurotransmitter in place of NE and Epi [Show More]

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