Extragastrointestinal stromal tumors with diffuse membranous distribution with bleeding: A case report

Figure 1 Abdominal computed tomography scanning. It shows that the tumor is of heavy load and diffused in the abdominal cavity.

Figure 2 Positron emission tomography-computed tomography. It shows that the peritoneum is thickened with abnormal hypermetabolism, multiple mass or nodular soft tissue density images in abdominal/pelvic cavity and peritoneum; via enhancement scanning, the lesion is enhanced in mild to moderate level; multiple hypermetabolic lymph nodes in abdominal/pelvic cavity and right external ilium; and seroperitoneum.

Figure 3 Pathological examination. Based on pathological examination, extragastrointestinal stromal tumors of high risk was considered.

Figure 4 Abdominal computed tomography after treatment. It shows the tumor load is alleviated obviously with good therapeutic effect

Figure 5 Preoperative abdominal computed tomography. Surgical exploration shows that the masses in abdominal cavity had spontaneous necrosis and bleeding.

Figure 6 Tumor rupture and bleeding. During operation, diffuse nodules like cobblestone in abdominal cavity with hematocelia were seen. The nodules were in various sizes, approximately 0.5-1.5 cm, diffusely distributed in membrane tissues such as peritoneum, greater omentum and mesentery. The first picture on the left showed purple black nodules bleeding and bright red blood not coagulated.