Table 1.

Mucinous adenocarcinoma in patients with Chronic Suppurative Hidradenitis (CSH).

Reference	Patient	Clinical data	Treatment	Outcome
Ariwa [9]	Male 45 y.o.	15 years of CSH. Biopsy of perianal ulcer revealed mucinous adenocarcinoma overlaid on anal squamous epithelium.	Abdominoperineal resection.	Recurrence and death four years and six months after surgery.
Bernard et al. [1]	Male 59 y.o.	Gluteal and perineal suppuration for 11 months that began three years before being seen by the specialist. Extensive perianal lesions in the gluteal skin with the tumor in the middle of the lesions.	Radical resection of the disease, near the anus and the levator anal muscle. Most of the gluteus maximus had to be excised to achieve safety margin.	Two years later without disease, he gained weight, fecal continence preserved, and occasional loss of mucus caused by intermittent rectal mucosal prolapse.
Endo et al. [10]	Male 65 y.o.	12 years of CSH. Diagnosis of tumor with extensive invasion.	NR	Died right after the diagnosis.
Marti et al. [11]	Male 39 y.o.	The tumor was found during perianal abscess excision.	Abdominoperineal resection + adjuvant chemo and radiotherapy.	Follow-up of 1 year without recurrence. Died in the second year after the diagnosis.
do Val et al. [12]	Female 48 y.o.	Extensive CSH in vulvar and perianal region for 10 years.	Abdominoperineal resection + adjuvant radiotherapy.	Follow-up of 1 year without recurrence.

APR, abdominoperineal resection of the rectum; NR, not reported.