People keep getting these USMLE questions wrong for the same reason
I’ve been writing some Step 1-style questions focused on common reasoning traps.
Noticed something interesting — even strong students fall into the same patterns.
Try these:
A 34-year-old male presents to the clinic complaining of persistent epigastric discomfort and a 5-kg weight loss over the past two months. He reports that his father died of stomach cancer at the age of 38. Upper endoscopy reveals no discrete mass but shows diffuse thickening of the gastric wall, which appears rigid during insufflation. A biopsy is performed, and microscopic examination shows infiltrating cells with large cytoplasmic mucin vacuoles that displace the nuclei to the periphery (signet-ring cells). Which of the following genetic alterations is most likely associated with this patient's condition?
A) Mutation in the APC gene
B) Loss-of-function mutation in the CDH1 gene
C) Microsatellite instability due to MSH2 mutation
D) Overexpression of the HER2/neu receptor
E) Translocation of the c-myc oncogene
A 62-year-old female presents with sudden onset of hematuria, oliguria, and skin rashes. Physical examination reveals sinonasal ulcerations and palpable purpura on her lower extremities. Laboratory studies show a rapidly increasing serum creatinine level. A urinalysis reveals proteinuria and red blood cell casts. A renal biopsy demonstrates crescentic glomerulonephritis with a pauci-immune pattern on immunofluorescence. Which of the following serological markers is most specific for this patient’s underlying condition?
A) MPO-ANCA (p-ANCA)
B) PR3- ANCA (c-ANCA)
C) Anti-double-stranded DNA (dsDNA)
D) Anti-glomerular basement membrane (GBM) antibodies
E) Anti-Scl-70 antibodies bu sorular nasil
Curious how you approached them.