title: Adult idiopathic hypertrophic pyloric stenosis.
abstract: Idiopathic hypertrophic pyloric stenosis (IHPS) is a predominantly infantile disease. The adult type of IHPS is extremely rare but it has been well recognized since the 19(th) century. We report a case of a 47-year-old male patient who presented with postprandial nausea and vomiting. He underwent upper gastrointestinal endoscopy, and gastric outlet obstruction was discovered. The upper gastrointestinal barium study showed a distended stomach with delayed gastric emptying due to pyloric stenosis. The abdominal computed tomography revealed thickening of the distal stomach. Since gastric malignancy could not be excluded, he underwent antrectomy with Billroth I anastomosis. The pathology revealed no malignancy but showed hypertrophy and hyperplasia of the inner circular muscle of the pylorus, which was compatible with IHPS. We reported the case to remind young physicians of this rare disease.
authors.affiliation: Division of Gastroenterology, Department of Internal Medicine, Jen Ai Hospital, Taichung, Taiwan. Electronic address: linhp@ms13.hinet.net.
authors.forename: Hsien-Ping
authors.initials: HP
authors.lastname: Lin
authors.affiliation: Department of General Surgery, Jen Ai Hospital, Taichung, Taiwan.
authors.forename: Yu-Chiang
authors.initials: YC
authors.lastname: Lin
authors.affiliation: Department of Pathology, Jen Ai Hospital, Taichung, Taiwan.
authors.forename: Chen-Yun
authors.initials: CY
authors.lastname: Kuo
mesh_terms: D016099:Endoscopy, Gastrointestinal; D005743:Gastrectomy; D006801:Humans; D006965:Hyperplasia / Q000473:pathology; D006984:Hypertrophy / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009325:Nausea / Q000209:etiology; D046248:Pyloric Stenosis, Hypertrophic / Q000175:diagnosis* / Q000601:surgery*; D011708:Pylorus / Q000473:pathology*; D014057:Tomography, X-Ray Computed; D014839:Vomiting / Q000209:etiology
keywords: adult; circular muscle; gastric outlet obstruction; idiopathic hypertrophic pyloric stenosis