Colon Cancer with Bone Marrow Metastasis as the Initial Presentation: A Case Report

Colorectal carcinoma still represents a global health burden despite the advances in its management. The most common sites of distant metastasis from colorectal carcinoma are hepatic and pulmonary metastases while metastases are rarely reported to affect the bone marrow. We report a 59-year-old male patient who presented with progressively worsening pain in the right scapular region and pancytopenia. He was diagnosed by a bone marrow biopsy as a case of metastatic descending colon cancer. The patient had pancytopenia. CT and bone marrow puncture examinations indicated the presence of bone marrow metastasis of colon tumor. Though being rare, bone marrow metastasis should be suspected in colorectal carcinoma cases with abnormalities in peripheral blood count.