Black Anal Canal: Acute Necrosis.
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.
Department of Gastroenterology, Centro Hospitalar de Leiria, Leiria, Portugal.
Sandra
S
Barbeiro
Department of Gastroenterology, Centro Hospitalar de Leiria, Leiria, Portugal.
Catarina
C
Martins
Department of Gastroenterology, Centro Hospitalar de Leiria, Leiria, Portugal.
Cláudia
C
Gonçalves
Department of Surgery, Centro Hospitalar de Leiria, Leiria, Portugal.
Paulo
P
Alves
Department of Surgery, Centro Hospitalar de Leiria, Leiria, Portugal.
Inês
I
Gil
Department of Gastroenterology, Centro Hospitalar de Leiria, Leiria, Portugal.
Manuela
M
Canhoto
Department of Gastroenterology, Centro Hospitalar de Leiria, Leiria, Portugal.
Filipe
F
Silva
Department of Gastroenterology, Centro Hospitalar de Leiria, Leiria, Portugal.
Isabel
I
Cotrim
Department of Pathology, Centro Hospitalar de Leiria, Leiria, Portugal.
Cristina
C
Amado
Department of Gastroenterology, Centro Hospitalar de Leiria, Leiria, Portugal.
Liliana
L
Eliseu
Department of Gastroenterology, Centro Hospitalar de Leiria, Leiria, Portugal.
Helena
H
Vasconcelos
Anal canal; Black anal canal; Ischemia; Necrosis