For citations:
Arkhipova O.V., Vasilyevykh T.A., Veselov V.V., Mainovskaya O.A. Squamous cell metaplasia of the rectum associated with a longstanding ulcerative colitis (clinical cases report). Koloproktologia. 2021;20(3):72-76. (In Russ.) https://doi.org/10.33878/2073-7556-2021-20-3-72-76