Cystic inflammatory masses in the left upper abdomen with obvious pressure pain, such as masses in the middle of the upper abdomen are often tumors, cysts or stones in the stomach or pancreas. Differential diagnosis of cystic mass with pressure pain in left upper abdomen: 1. “Gas string-like” mass in abdomen: “Gas string-like” mass in abdomen is a symptom of colon cancer. Colon cancer is mostly seen in middle-aged and elderly people, with more men than women aged 30-69. Early symptoms are not obvious, but the common symptoms in middle and late stage patients include abdominal pain and GI irritation, abdominal mass, change in bowel habits and stool properties, anemia and symptoms caused by chronic toxin absorption and intestinal obstruction and intestinal perforation, etc. 2, abdomen can be palpable huge soft mass: giant bladder – small colon – intestinal dyskinesia syndrome patients at birth weight is still normal, later progressive abdominal distension, no meconium, abdomen can be palpable huge soft mass, often susceptible to urinary tract infection. 3, lower abdominal mass: lower abdominal mass is a mass in the lower abdomen, hard to touch, may be benign or malignant tumors, mostly symptoms of gynecological diseases or intestinal and peritoneal diseases. 4, soft salami-like masses can be palpated in the right lower abdomen: cecum granuloma has cecum amebic granuloma and ileocecal schistosomal granuloma. Cecum amebic granuloma is a complication of chronic colitis caused by Entamaeba Histolytica E (Histolytica). Schistosomiasis granuloma of the ileocecal region is an advanced lesion of intestinal schistosomiasis in which the site of deposition of schistosome eggs is mainly the terminal ileum in addition to the colon. The clinical symptoms are limited abdominal pain and intermittent diarrhea, and a soft salami-like mass can be palpated in the right lower abdomen, in addition to chronic low-level small bowel obstruction, which often persists for several months before acute intestinal obstruction symptoms appear. 5.Mass in the midline of abdomen: Mass in the midline of abdomen is the clinical feature of white line hernia. The two lateral rectus abdominis sheaths intertwine in the abdominal midline to form the abdominal white line. The abdominal viscera is called hernia of white line when it comes out of the abdomen through the abdominal white line. 6. lateral abdominal wall mass with fixed pressure pain: lateral abdominal wall mass with fixed pressure pain is the main clinical sign of hallux valgus hernia. The anterior and posterior layers of the rectus abdominis sheath heal at the lateral edge of the rectus abdominis muscle, forming a semilunar, convex, lateral, curved tendon structure, i.e., the semilunar line. The protrusion of the peritoneum or intra-abdominal organs through the lateral border of the rectus abdominis muscle at the semilunar line is called a spigelian hernia, also known as a lateral abdominal wall hernia. spige (1617) first described the anatomy of the semilunar line, hence the name spigelian hernia.