Fig. 1

Preoperative upper gastrointestinal X-ray barium meal showed gastric retention, gastroduodenal anastomosis stenosis, and obstructed contrast passage (A). Breast ultrasound showed a hypoechoic cluster of about 2.1 cm*1.0 cm in size, with poorly defined and irregular shape, and dotted strong echogenicity in the right breast next to the nipple at point 7, and CDFI: blood flow signal was visible (B, C). Postoperative gastric CT showed thickening of the gastric wall in the sinus, the thickest part of which was about 22 mm in diameter, involving the whole circumference of the lumen, with a length of about 150 mm, and the surrounding lymph nodes showed that the obstructive symptoms were significantly relieved after surgery (D, E). The whole-body bone scan suggested multiple tumor metastases (F)