[Computed tomographic detection of a small bowel carcinoid].

Area of Science:

• Gastroenterology and Oncology
• Abdominal Imaging
• Surgical Pathology

Background:

• Carcinoid tumors are neuroendocrine neoplasms that can arise in various gastrointestinal locations, including the terminal ileum.
• These tumors are characterized by local infiltrative growth, often eliciting a significant fibro-sclerotic reaction in the surrounding mesentery.
• Metastatic spread occurs in approximately 30% of cases, typically involving regional lymph nodes and the liver, with pulmonary involvement being less common.

Observation:

• A patient presented with symptoms suggestive of incomplete bowel obstruction.
• Physical examination revealed a mass in the right abdominal quadrant.
• Computed Tomography (CT) imaging demonstrated an ileal tumor with characteristic mesenteric fibro-sclerotic infiltration.

Findings:

• The CT findings were highly suggestive of a carcinoid tumor.
• Additionally, the imaging revealed metastatic involvement in the cardiophrenic angle lymph nodes, a rare site for carcinoid metastasis.
• The combination of an ileal primary tumor and unusual metastatic pattern was noted.

Implications:

• This case underscores the importance of considering carcinoid tumors in the differential diagnosis of right abdominal quadrant masses and bowel obstruction.
• The identification of unusual metastatic sites, such as cardiophrenic angle nodes, emphasizes the need for comprehensive staging and surveillance in carcinoid patients.
• Further research into the metastatic potential and patterns of gastrointestinal carcinoid tumors may improve diagnostic accuracy and patient management.