Ann Coloproctol.  2016 Aug;32(4):156-158. 10.3393/ac.2016.32.4.156.

Black Anal Canal: Acute Necrosis

• Barbeiro S
• Martins C
• Gonçalves C
• Alves P
• Gil I
• Canhoto M
• Silva F
• Cotrim I
• Amado C
• Eliseu L
• Vasconcelos H

• KMID: 2400014
• DOI: http://doi.org/10.3393/ac.2016.32.4.156

Abstract

Acute ischemia of the rectum or anal canal resulting in necrosis is extremely uncommon because both the rectum and the anal canal have excellent blood supplies. We present a case with spontaneous necrosis of the anal canal without rectal involvement. Surgical debridement was accomplished, and the recovery was uneventful. The patient was elderly, with probable atherosclerotic arterial disease, and presented with hypotension. Due to the lack of other precipitating factors, the hypoperfusion hypothesis seems to be the most suitable in this case. To the best of our knowledge, no similar cases have been reported in the literature on this subject.

Keyword

Anal canal; Ischemia; Necrosis; Black anal canal

MeSH Terms

Aged
Anal Canal*
Debridement
Equipment and Supplies
Humans
Hypotension
Ischemia
Necrosis*
Precipitating Factors
Rectum