Clinicopathological Study of 6 Patients with Perianal Cyst

Anal Gland/Duct Cyst: A Case Report

“…Arakawa and Arakawa [1] summarized 10 cases of perianal cysts related to anal ducts, and 8 cases (80%) had an anterior location. Similarly, Ozawa et al [2] reported 6 patients with perianal cysts; 5 cases (83.3%) were AGC and 4 cases (66.7%) were located in the anterior midline of anus. Therefore, AGCs seem to occur on the anterior wall of the anus.…”

“…AGC is one of the rare perianal cysts and occurs in about 0.05% of patients undergoing anal surgery [1,2]. Arising when an obstruction of the anal duct causes fluid collection in the anal gland, AGC is considered to be a retention cyst in the anal gland [1,3].…”

“…However, tumors and cysts of the perianal region commonly occur in the presacrococcygeal space [ 6 ], and Kulaylat et al [ 5 ] reported a case of AGC in the retrorectal space. The perianal region, a wide and ambiguous range, includes the internal and external region of the anus, and perianal cysts include other cysts, such as tailgut, dermoid, epidermoid, and teratomas, which occur in the presacral or retrorectal space [ 2 , 5 - 8 ]. The presacral space, often referred to as the retrorectal space, is a potential space that lies anterior to the sacrum and coccyx, and its inferior boundary is the levator ani and coccygeal muscle [ 8 ].…”

“…Anal gland/duct cyst (AGC) is one of the cysts that are found in the perianal region and anal canal. Perianal cysts are uncommon and seen in only 0.05% to 0.06% of patients who undergo anal surgery [1,2]. AGC is thought to be a retention cyst in the anal gland and arises when an obstruction of the anal duct causes fluid collection in the anal gland [3].…”

Endoscopic resection of an anal gland cyst

“…[1,2]. AGCs are rare and seen in only 0.05 % of patients undergoing anal surgery [2,3]. AGCs are usually treated by transanal resection; there have been no reports of endoscopic resection [1 -4].…”