Poorly Differentiated Neuroendocrine Tumor of the Rectum Coexistent with Giant Rectal Villous Adenoma Presenting as McKittrick-Wheelock Syndrome

<div>Colonoscopy showing friable ulcerated nearly obstructing mass at the anus extending up to 17-18 cm in the anal canal and rectosigmoid region.</div>

Case Reports in Oncological Medicine

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Figure 3: Poorly Differentiated Neuroendocrine Tumor of the Rectum Coexistent with Giant Rectal Villous Adenoma Presenting as McKittrick-Wheelock Syndrome 

Figure 3 | Poorly Differentiated Neuroendocrine Tumor of the Rectum Coexistent with Giant Rectal Villous Adenoma Presenting as McKittrick-Wheelock Syndrome 