A patient with leukemia on chemotherapy develops acute lower abdominal pain associated with anemia, thrombocytopenia and leucopenia Which of the following is the clinical diagnosis?

1. A

   Appendicitis

2. B

   Leukemic colitis

3. C

   Perforation peritonitis

4. D

   Neutropenic Colitis

Appeared in: Chitranjjan National Cancer Institute Kolkata - 2021

Explanation

• Neutropenic colitis, or typhlitis, is a serious inflammation and necrosis of the bowel (most often the cecum) that occurs in patients with a severely weakened immune system.
• The patient's history of leukemia and recent chemotherapy are major risk factors for developing profound neutropenia (a type of leucopenia).
• In the setting of neutropenia, the intestinal lining, which is also damaged by chemotherapy, becomes susceptible to invasion by gut bacteria.
• This leads to the classic clinical triad of fever, abdominal pain, and neutropenia, making it the most likely diagnosis.

Why Other Options Were Wrong

• Option A: While the pain location can mimic appendicitis (right lower quadrant), the key differentiating lab finding is the white blood cell count. This patient has leucopenia (low WBCs).
• Option B: Leukemic colitis refers to the direct infiltration of the bowel wall by cancerous leukemia cells. While it can cause abdominal symptoms, it is a different pathophysiological process and less common as an acute presentation compared to neutropenic colitis, which is a direct and frequent complication of chemotherapy-induced neutropenia.
• Option C: Perforation peritonitis describes a ruptured hollow organ (like the bowel) leading to widespread inflammation of the abdominal lining (peritoneum). It is a potential life-threatening complication of severe neutropenic colitis or appendicitis, not the initial underlying disease process.

Related Visual

Clinical Relevance

• Nursing practice connection: Use the key finding related to Differential diagnosis of acute abdominal pain in an immunocompromised patient to guide bedside assessment, documentation, and the next nursing action.
• Nurses must maintain a high index of suspicion for neutropenic colitis in any chemotherapy patient who complains of abdominal pain, as it is a medical emergency.
• Prompt recognition, reporting to the physician, and initiation of treatment (bowel rest, IV fluids, broad-spectrum antibiotics) are critical to prevent sepsis, bowel perforation, and death.
• Nursing care involves close monitoring of vital signs, pain assessment, abdominal girth measurement, and strict infection control precautions.

How to Approach the Question

• First, identify the patient's background: a high-risk, immunocompromised individual (leukemia patient on chemotherapy).
• Next, analyze the presenting signs and symptoms: acute lower abdominal pain.
• Then, correlate with the laboratory findings: anemia, thrombocytopenia, and especially leucopenia (which implies neutropenia).
• Synthesize these three pieces of information. The combination of an immunocompromised state, abdominal pain, and neutropenia points to a specific diagnosis.
• Evaluate the options. Rule out options that contradict the key findings (e.g., appendicitis is associated with high WBCs) or describe a complication rather than the primary disease (e.g., perforation).

Concept Tested & Keywords

• Concept Tested: Differential diagnosis of acute abdominal pain in an immunocompromised patient.
• Stem keywords: leukemia, chemotherapy, acute lower abdominal pain, anemia, thrombocytopenia, leucopenia
• Lead-in keywords: clinical diagnosis
• Clinical cues: Patient with leukemia on chemotherapy indicates an immunocompromised state.
• Clinical cues: Leucopenia is a key lab finding that points towards neutropenia, a critical factor in the diagnosis.

Question ID

QfVvKDWFjwUvOI-oCtsWcz

Copy ID

Reference Book

E6 Medicine Harrison 22e Part 1 pp. 638-640, 1417-1419

E6 Medicine Harrison 22e Part 2 p. 500-502