Uncomplicated spontaneous rupture of pancreatic pseudocyst into stomach: A case report.

Pseudocysts of the pancreas are not rare, but spontaneous perforation and/or fistulization occurs in fewer than 3% of these pseudocysts. Perforation into the free peritoneal cavity, stomach, duodenum, colon, portal vein, pleural cavity and through the abdominal wall has been reported. Spontaneous rupture of the pancreatic pseudocyst into the surrounding hollow viscera is rare and, may be associated with life-threatening bleeding. Such cases require emergency surgical intervention. Uncomplicated rupture of pseudocyst is an even rarer occurrence. We present a case of spontaneous resolution of a pancreatic pseudocyst with gastric connection without bleeding. A 67-year-old women with a large pancreatic pseudocyst resulting from a complication of chronic pancreatitis was referred to our institution. During hospital stay, there was sudden decrease in the size of epigastric lump. Repeat computed tomography (CT) revealed that the size of the pseudocyst had decreased significantly; however, gas was observed in stomach and pseudocyst along with rent between lesser curvature of stomach and pseudocyst suggestive of spontaneous cystogastric fistula.The fistula tract occluded spontaneously and the patient recovered without any complication or need for surgical treatment. After 5 wk, follow up CT revealed complete resolution of pseudocyst. Esophagogastroduodenoscopy revealed that the orifice was completely occluded with ulcer at the site of previous fistulous opening.