For citations:
Pershina A.E., Trubacheva Yu.L., Vyshegorodtsev D.V., Biryukov O.M. Ultrasonography of solitary rectal ulcer syndrome (review and case reports). Koloproktologia. 2022;21(4):100-110. (In Russ.) https://doi.org/10.33878/2073-7556-2022-21-4-100-110