The parent of a 3-year-old with suspected Wilms tumor says, 'How could I have missed a lump this big?' Which is the best response?

The parent of a 3-year-old with suspected Wilms tumor says, 'How could I have missed a lump this big?' Which is the best response?

You are discussing physical child abuse with medical students; you state that fractures are common presentation and those that should raise suspicion for abuse include fractures that are unexplained, occurring in young, non-ambulatory children, or involve multiple bones. Of the following, the site of the fracture that is LESS specific for abuse is

During the routine exam of an infant the parents state a 5th degree family history of adenomatous polyposis. The statement that should be included during the discussion is the infant is at increased risk of colonic adenocarcinoma

A 5-year-old child, recently diagnosed with ileocecal Burkitt lymphoma; lab investigations reveal: serum uric acid 12 mg/dl, serum sodium, 145 meq/dl; serum potassium, 4.5 meq/dl; serum phosphate 4.4 meq/dl; serum calcium, 8.9 mg/dl; blood urea, 22 mg/dl; serum creatinine, 0.8 mg/dl. Of the following, the MOST effective treatment is

A 2-mo-old male infant has a left flank mass discovered incidentally by the mother; radiological imaging reveals a left renal mass. Of the following, the MOST likely diagnosis is