Waist subcutaneous soft tissue metastasis of rectal mucinous adenocarcinoma: A case report

Figure 1 Timeline of the diagnosis and treatment of the patient.

Figure 2 Contrast-enhanced abdominal computed tomography. A: Rectal anastomosis plain scan; B: Rectal anastomosis arterial phase scan; C: Rectal anastomosis venous phase scan; D: Plain scan of the soft tissue mass of the left waist; E: Arterial phase scan of the soft tissue mass of the left waist; F: Venous phase scan of the soft tissue mass of the left waist.

Figure 3 Ultrasound: A solid mass of 21 mm × 16 mm in size, irregularly bound and without obvious blood flow, located in the subcutaneous soft tissue of the left waist.

Figure 4 The colonoscopy results of this admission. A: Low-grade tubular adenoma (ascending colon); B: Hyperplastic polyp (transverse colon); C: Hyperplastic polyp (sigmoid colon); D: Anastomotic scar.

Figure 5 Soft tissue masses resected from the left waist subcutaneous soft tissue mass during surgery.

Figure 6 Pathological examination of the left waist mass. A: Mucus is visible; B: Mucus is seen around adenocarcinoma cells (hematoxylin and eosin, × 200).

Figure 7 MUC2 (+), MUC5AC (partially +), CK20 (+), CDX-2 (+), CK (P) (+), Ki-67 (index 80%) (immunohistochemistry, × 200).