A faecaloma is a mass of faeces most frequently noted in the rectum and sigmoid colon, that is much harder than a faecal impaction due to coprostasis.
Symptoms are nonspecific and include constipation, abdominal pain, anorexia, nausea or vomiting, overflow diarrhoea, faecal incontinence and urinary symptoms from pressure.
Usually, the faecal matter accumulates in the intestine, then stagnates and increases in volume until the intestine becomes deformed and acquires characteristics similar to those of a tumour.
A faecaloma should be considered when there is evidence of focal faecal material of equal or greater diameter than the colon.
There are several causes of faecaloma and have been described in association with
- Hirschsprung's disease
- psychiatric patients
- Chagas disease
- both inflammatory and neoplastic conditions
- patients suffering with chronic constipation
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