Anus, imperforate Health Dictionary

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  2. Anus, Imperforate

Anus, Imperforate: From 1 Different Sources

A rare congenital abnormality in which the anal opening is missing or covered over. The severity of the condition varies from complete absence of the anal canal to only a layer of skin covering the anal opening.

Treatment involves surgery.

A colostomy may be needed initially before definitive surgery to construct an anus.

Health Source: BMA Medical Dictionary
Author: The British Medical Association

Anus

In nematodes, an opening of the alimentary system on the ventral side at the posterior end of the female nematodes.... anus

Imperforate

An adjective meaning lack of an opening. For example, occasionally the ANUS fails to develop properly, resulting in partial or complete obstruction of the opening. Sometimes pubertal girls have an imperforate HYMEN which obstructs the opening to the VAGINA and prevents menstrual ?ow of blood draining to the exterior.... imperforate

Anus, Diseases Of

See under RECTUM, DISEASES OF.... anus, diseases of

Anus, Cancer Of

A rare cancer of the skin of the anus. Possible early signs are development of swelling or an ulcer at the anus accompanied by bleeding and discomfort. Treatment is by surgical removal and/or radiotherapy.... anus, cancer of

Anus, Disorders Of

Most anal disorders affect adults and are minor, but they may cause discomfort.

Rarely, the anus may fail to develop normally and surgical treatment is needed (see anus, imperforate).

In anal stenosis, the anus is too narrow to allow the passage of faeces.

Anal fissures originate from tears in the lining of the anus, usually as a result of straining to pass faeces.

Cancer of the skin around the anus is rare (see anus, cancer of).

Haemorrhoids are enlarged blood vessels under the anal lining.

An anal fistula is an abnormal channel connecting the anal canal with the skin surrounding the anus.

Itching of the anus is common and may be due to haemorrhoids or other disorders such as threadworm infestation.... anus, disorders of

Imperforate Anus

(proctatresia) partial or complete obstruction of the anus: a congenital malformation in which the anal canal fails to develop correctly and the rectum ends blindly above the muscles of the perineum. Many types exist, including developmental anal stenosis, persistent anal membrane, and covered anus (due to fused genital folds). Most mild cases of imperforate anus can be treated by a simple operation. If the defect is extensive a temporary opening is made in the colon (see colostomy), with later surgical reconstruction of the rectum and anus.... imperforate anus

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