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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/03/14 16:22:59」(JST)

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A fecaloma (pronounced /fiːkəˈloʊmə/, "FEE-kə-LOH-mə"), also called fecalith, fecolith and coprolith, i.e., a "stone" made of feces, is a hardening of feces into lumps of varying size inside the colon, which may appear whenever chronic obstruction of transit occurs, such as in megacolon and chronic constipation. Some diseases, such as Chagas disease, Hirschsprung's disease and others damage the autonomic nervous system in the colon's mucosa (Auerbach's plexus) and may cause extremely large or "giant" fecalomas, which must be surgically removed (disimpaction). Rarely, a fecalith will form around a hairball (Trichobezoar), or other hygroscopic or desiccant nucleus. Distal or sigmoid, fecalomas can often be disimpacted digitally or by a catheter which carries a flow of disimpaction fluid (water or other solvent or lubricant).

Fecal impaction and attempts at removal can have severe and even lethal effects, such as the rupture of the colon wall by catheter or an acute angle of the fecaloma (stercoral perforation), followed by septicemia. A small fecalith is one cause of both appendicitis and acute diverticulitis.

References[edit]

Garisto J, Campillo L, Edwards E, Harbour M, Ermocilla R (2009). "Giant fecaloma in a 12-year-old-boy: a case report" (^{[dead link]}). Cases. 2:127 (1): 127. doi:10.1186/1757-1626-2-127. PMC 2642792. PMID 19196473.

UpToDate Contents

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1. 消化管のシャーガス病 gastrointestinal chagas disease

English Journal

Rectal perforation by impacted fecaloma--a new mechanism proposed.

Narang A, Mittal S, Garg P, Aggarwal S, Singh J, Kaushik K, Verma S.
Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology.Indian J Gastroenterol.2013 Nov;32(6):417-8. doi: 10.1007/s12664-012-0280-3.
PMID 23151896

Acute Urinary Retention in a 47-month-old Girl Caused by the Giant Fecaloma.

Park JS, Park TJ, Hwa JS, Seo JH, Park CH, Youn HS.Author information Department of Pediatrics, Gyeongsang Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Korea.AbstractWe present a case of a 47-month-old female suffering from acute urinary bladder neck obstruction and bilateral hydronephrosis secondary to a fecaloma. Fecaloma is defined as an accumulation of inspissated feces in the colon or rectum giving the appearance of an abdominal mass. A fecaloma can be developed by diverse causes and the causes of the fecaloma in this case were septum reformation after the Duhamel procedure and long-term constipation. Chronic constipation is very common at outpatient clinic. However, acute urinary retention and voiding difficulty caused by fecaloma in the giant Duhamel pouch has never been reported in Korea. We would like to present our case with acute urinary retention due to a fecaloma and suggest that fecaloma might be considered as one of the causes for acute urinary retention, especially in cases with previous Duhamel operation for repair of Hischsprung disease.
Pediatric gastroenterology, hepatology & nutrition.Pediatr Gastroenterol Hepatol Nutr.2013 Sep;16(3):200-5. doi: 10.5223/pghn.2013.16.3.200. Epub 2013 Sep 30.
We present a case of a 47-month-old female suffering from acute urinary bladder neck obstruction and bilateral hydronephrosis secondary to a fecaloma. Fecaloma is defined as an accumulation of inspissated feces in the colon or rectum giving the appearance of an abdominal mass. A fecaloma can be deve
PMID 24224155

A case of fecaloma.

Aiyappan SK1, Ranga U1, Samraj A2, Rajan SC1, Veeraiyan S1.Author information 1Department of Radiodiagnosis and Imaging, Saveetha Medical College and Hospital, Thandalam, Kancheepuram, Tamilnadu 602105 India.2Department of General Surgery, Saveetha Medical College and Hospital, Thandalam, Kancheepuram, Tamilnadu 602105 India.AbstractFecalomas represent firm organized form of impacted feces. They are commonly seen in sigmoid colon. We report a case of large fecaloma in young adult female with chronic constipation, which was managed conservatively.
The Indian journal of surgery.Indian J Surg.2013 Aug;75(4):323-4. doi: 10.1007/s12262-012-0460-5. Epub 2012 Mar 22.
Fecalomas represent firm organized form of impacted feces. They are commonly seen in sigmoid colon. We report a case of large fecaloma in young adult female with chronic constipation, which was managed conservatively.
PMID 24426465

Japanese Journal

Hepatic venous outflow block caused by compressive fecaloma in a schizophrenic patient treated with clozapine

Drug Discoveries & Therapeutics 9(6), 422-423, 2015
NAID 130005120108

Total Proctocolectomy and Ileal J-Pouch Anal Anastomosis for Chagasic Megacolon with Fecaloma : Report of a Case

Surgery today : the Japanese journal of surgery 36(3), 277-279, 2006-03-01
NAID 10017349759

Gastrointestinal stromal tumor (GIST) of the sigmoid colon presenting as megacolon with fecaloma : a hitherto undescribed presentation caused by diffuse muscular infiltration by GIST