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文献考察1)：異物による消化管穿孔21例．腹部単純写真で遊離ガスを認めたのは4例だけ．
Eur J Surg. 2000 Apr;166(4):307-9.
Intestinal perforation by foreign bodies.
Pinero Madrona A, Fernandez Hernandez JA, Carrasco Prats M, Riquelme Riquelme J, Parrila Paricio P.
OBJECTIVE: To present our experience of patients who presented with intestinal perforation by foreign bodies to our hospital between 1980 and 1998. DESIGN: Retrospective study. SETTING: University hospital, Spain. SUBJECTS: 21 patients who presented with intestinal perforation by foreign bodies. MAIN OUTCOME MEASURES: Size of perforations, nature of foreign bodies, clinical symptoms, radiological findings, treatment and outcome. RESULTS: The most common location was the terminal ileum (n = 11), followed by the rectosigmoid junction (n = 5). The objects were mainly bone fragments and toothpicks. The diagnosis was generally made at operation, and only 4 of the 21 patients had signs of pneumoperitoneum on the preoperative abdominal film. The most common treatment was simple suture of the defect. CONCLUSIONS: Intestinal perforation by a foreign body is uncommon, and normally affects the ileocaecal and rectosigmoid regions, in which it is unusual to find pneumoperitoneum preoperatively. It must be considered in the differential diagnosis of such conditions as acute appendicitis and diverticulitis.PMID: 10817327
文献考察2)：手術を要したのは4.8%
World J Surg. 1996 Oct;20(8):1001-5.
Ingested foreign bodies of the gastrointestinal tract: retrospective analysis of 542 cases.
Velitchkov NG, Grigorov GI, Losanoff JE, Kjossev KT.
Ingested foreign bodies (FBs) present a common clinical problem. As the incidence of FBs requiring operative removal varies from 1% to 14%, it was decided to perform this study and compare the data with those from the world literature, as well as to outline an algorithm for management, including indications for surgery. We reviewed all patients with FB ingestion from 1973 to 1993. There were 542 patients with 1203 ingestions, aged 15 to 82 years. Among them, 69. 9% (n = 379) were jail inmates at the time of ingestion, 22.9% (n = 124) had a history of psychosis, and 7.2% (n = 39) were alcoholics or denture-wearing elderly subjects. Most foreign bodies passed spontaneously (75.6%; n = 410). Endoscopic removal was possible in 19. 5% (n = 106) and was not associated with any morbidity. Only 4.8% (n = 26) required surgery. Of the latter, 30.8% (n = 8) had long gastric FBs with no tendency for distal passage and were removed via gastrotomy; 15.4% (n = 4) had thin, sharp FBs, causing perforation; and 53.8% (n = 14) had FBs impacted in the ileocecal region, which were removed via appendicostomy. Conservative approach to FB ingestion is justified, although early endoscopic removal from the stomach is recommended. In cases of failure, surgical removal for gastric FBs longer than 7.0 cm is wise. Thin, sharp FBs require a high index of suspicion because they carry a higher risk for perforation. The ileocecal region is the most common site of impaction. Removal of the FB via appendicostomy is the safest option and should not be delayed more than 48 hours.PMID: 8798356
文献考察3)：手術を要したのは3％
Z Gastroenterol. 1996 Mar;34(3):173-7.
Conservative management of foreign bodies in the gastrointestinal tract.
Kurkciyan I, Frossard M, Kettenbach J, Meron G, Sterz F, Roggla M, Laggner AN.
There are at present no clear guidelines whether foreign body ingestion in the gastrointestinal tract should be managed conservatively, endoscopically or surgically. Retrospectively we have, therefore, analyzed 78 foreign body ingestion's in 42 patients (age 15-72 years) admitted to the Emergency Department of the University Hospital in Vienna. Our intention was to assess the value of a conservative management, defined as daily follow-up visits until the foreign body spontaneously appeared in the feces and to find criteria when endoscopic or surgical management is required. Of 78 foreign bodies, 67 (86%) passed the gastrointestinal tract spontaneously without complications, 9 (11%) were removed endoscopically, and only 2 (3%) required surgery. There were no gastrointestinal perforations. Even foreign bodies with a maximal length of 13.5 cm appeared in the feces spontaneously within a few days. Our data suggests that more than 80% of adults with foreign body ingestion can be managed safely as outpatients by means of conservative treatment. Endoscopic or surgical removal is only indicated in very rare circumstances.PMID: 8650970
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