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Black Anal Canal: Acute Necrosis
Sandra Barbeiro,Catarina Martins,Cláudia Gonçalves,Paulo Alves,Inês Gil,Manuela Canhoto,Filipe Silva,Isabel Cotrim,Cristina Amado,Liliana Eliseu,Helena Vasconcelos 대한대장항문학회 2016 Annals of Coloproctolgy Vol.32 No.4
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.
Gisela Andrade,André Pereira,Lucília Gonçalves,Cláudia Videira 한국유방암학회 2021 Journal of breast cancer Vol.24 No.4
Breast tissue markers are common in current clinical practice and are susceptible to migration. Herein, we present the case of a 47-year-old woman with invasive breast carcinoma diagnosed through ultrasound-guided core biopsy, who underwent placement of a breast marker (HydroMARK®) under ultrasound guidance 30 days after core biopsy and with subsequent marker migration to the nipple. The correct position of the marker was documented by mammography after its placement and by magnetic resonance imaging (MRI) after neoadjuvant chemotherapy. Migration of the marker to the nipple was evident only by mammography on the day of surgery. We hypothesized that an intraductal path was the route of marker migration in this patient. Marked ductal ectasia evident on MRI and histopathologic examination supported this hypothesis. To the best of our knowledge, this is the first published case of intraductal migration of a breast tissue marker.