Capsule endoscopy in patients with malignant melanoma

Area of Science:

• Gastroenterology
• Oncology
• Medical Imaging

Background:

• Small bowel (SB) metastases are common in melanoma patients (50-60% postmortem) but often undiagnosed during life (10%).
• Conventional diagnostic methods have limitations in detecting SB involvement in melanoma patients.

Purpose of the Study:

• To evaluate the diagnostic yield of capsule endoscopy (CE) for small bowel (SB) metastases in melanoma patients.
• To compare the efficacy of CE with conventional investigations for diagnosing SB involvement.

Main Methods:

• Thirteen melanoma patients (8 male, 5 female) with suspected SB involvement underwent capsule endoscopy (CE).
• Indications for CE included gastrointestinal bleeding, anemia, positive fecal occult blood test, abnormal imaging, and abdominal pain.
• Previous investigations included endoscopy, push enteroscopy, SB follow-through, CT scan, and/or PET scan.

Main Results:

• Capsule endoscopy (CE) detected SB metastases in 5 patients and excluded involvement in 8.
• CE identified new lesions not previously detected by other imaging modalities.
• CE ruled out SB metastases in cases where other tests were inconclusive.

Conclusions:

• Capsule endoscopy (CE) demonstrates higher reliability in detecting and assessing the extent of SB metastases in melanoma patients compared to conventional diagnostic tools.
• CE should be considered a valuable component in the diagnostic workup for melanoma patients with suspected small bowel disease.