MCC is a rare cancer that typically metastasizes to distant lymph nodes, liver, lungs, and bone.1 There have been few cases reported of MCC metastasizing to other areas of the GI tract apart from the colon. These include the stomach and duodenum; stomach; ileocecal valve; small bowel mesentery; jejunum; stomach, pancreas, and distal duodenum; stomach, jejunum, and ileum; and pancreas.1–16
To our knowledge, there are only 4 case reports regarding MCC metastasizing to the colon (Table 1). Our patient is the fifth patient with MCC metastases to the colon, and the second specifically to the transverse colon.
This case report is an example of the rarity of MCC metastasizing to the GI tract, particularly the colon, and serves as a reminder that a patient's history is an important marker of prediction of a mass. Biopsy is always warranted in these cases to confirm the diagnosis and allow prompt treatment and follow-up with oncology.
Author contributions: All authors contributed equally to this manuscript. S. Mehta is the article guarantor.
Financial disclosure: None to report.
Informed consent was obtained for this case report.
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