Successful treatment of basaloid squamous cell carcinoma in the rectosigmoid colon: A case report and review of literature

Figure 1 Magnetic resonance imaging and positron emission tomography image. A: T1 weighted axial image showing a low intensity mutiseptated cystic lesion on the pelvic cavity and uterus; B: Positron emission tomography-computer tomography image (PET-CT) shows multiple hypermetabolic foci at the pelvis; C: PET-CT showing high ¹⁸F-fluorodeoxyglucose (FDG) uptake in the rectum and uterus; D: FDG uptakes are noted in the left internal iliac lymph node.

Figure 2 En bloc resected tumor. A: Fresh specimen; B: Formalin fixed specimen.

Figure 3 Pathological findings of the tumor. A: At a lower power view, the tumor shows a poorly differentiated carcinoma with solid growth pattern and foci of intratumoral necrosis (× 200); B: At a high power view, tumor cells are pleomorphic and shows scant cytoplasm. Tumor cells are arranged perpendicularly to the boundary between the tumor and adjacent normal tissue (× 400).