A preterm neonate has a sudden onset of abdominal distension, bloody stools, and feeding intolerance. What is the most likely diagnosis?

Correct Answer: B

Rationale: Necrotizing enterocolitis (NEC) is a life-threatening condition in preterm infants characterized by intestinal inflammation, leading to distension, bloody stools, and potential perforation. Risk factors include prematurity and enteral feeds.

Correct Answer: A

Rationale: Osteoarthritis is the most common form of arthritis and typically affects joints through wear and tear over time.

Correct Answer: A

Rationale: A scald burn on the side of the face, neck, and shoulder is suggestive of non-accidental injury, often seen in child abuse cases.

Correct Answer: B

Rationale: A low Factor VII level is a poor prognostic sign in fulminant hepatitis, indicating severe hepatic dysfunction and impaired coagulation.

Correct Answer: C

Rationale: Renal tubular acidosis causes normal anion gap metabolic acidosis, unlike other conditions listed, which lead to a high anion gap due to acid accumulation.