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Multiple myeloma presenting as CEA-producing rectal cancer
Giampaolo Talamo1, Amitkumar Barochia, Maurizio Zangari
1Penn State Hershey Cancer Institute, Hershey, PA, USA.
Rare Tumors
|December 9, 2010
Summary
This case study highlights a rare instance of multiple myeloma affecting the rectum. The myeloma cells surprisingly produced carcinoembryonic antigen (CEA), typically linked to rectal cancer.
Area of Science:
- Oncology
- Hematology
- Gastroenterology
Background:
- Multiple myeloma is a hematologic malignancy primarily affecting bone marrow.
- Extramedullary involvement, while known, is less common at initial presentation.
Observation:
- A 57-year-old patient presented with multiple myeloma.
- The patient exhibited extramedullary disease involving the rectum.
Findings:
- Malignant plasma cells in this patient produced carcinoembryonic antigen (CEA).
- CEA is a tumor marker more frequently associated with rectal adenocarcinomas.
Implications:
- This finding expands the understanding of potential tumor markers in multiple myeloma.
- It highlights the importance of considering myeloma in rectal masses, even with CEA elevation.
