Rare Case of Primary Follicular Lymphoma in the Ascending Colon: A Surgical Perspective

Case Summary: A 63-year-old male presented with abdominal pain, bloating, vomiting, chronic constipation, and a significant weight loss of 20 kg over two months. A physical examination revealed a firm mass in the right lower quadrant. Diagnostic imaging confirmed a 100x56x95 mm mass in the ascending colon, leading to a right hemicolectomy followed by chemotherapy.

Clinical Findings and Diagnosis:

  • A large vegetative lesion detected via colonoscopy
  • Histopathological and immunohistochemical findings confirmed follicular lymphoma (CD20, BCL2, and CD10 positive)
  • No evidence of metastasis

Treatment and Outcome: The patient underwent surgical resection with a right hemicolectomy and subsequent chemotherapy. Postoperative recovery was uneventful, and the patient was discharged after six days.

Understanding Primary Colonic Lymphoma:

  • Accounts for <1% of all colorectal malignancies
  • More common in males, typically diagnosed in the 6th and 7th decades of life
  • The cecum is the most affected region due to abundant lymphatic tissue

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