Rare primary colonic T cell lymphoma with curative resection by endoscopic submucosal dissection: A case report

Figure 1 Chest and abdominal computed tomography findings. A and B: Chest-abdominal plain computed tomography showed small nodules in both lungs. No other significant abnormalities were found.

Figure 2 Endoscopic findings. A and B: Colonoscopy image showing a pedunculated polyp in the transverse colon with a circumference of 5 cm.

Figure 3  First pathology image showing heterogeneous nuclear cells in inflammatory granulation tissue.

Figure 4 Endoscopic submucosal dissection was performed for the lesion. A and B: Submucosal injection of indigo carmine, epinephrine, and saline; C: Colonic polyp lesion.

Figure 5 Pathology and immunohistochemistry. A: Histopathology suggested highly active proliferation of T lymphocytes; B: CD3 immunohistochemical staining was positive.