Vias P, Goyal S, Periasamy K, Madan R, Devana SK, Bal A, Kundu R. Leiomyosarcoma of urinary bladder with unusual recurrence in intestinal mucosa and peritoneum: a case report. J Egypt Natl Canc Inst. 2021 Dec 13;33(1):38. doi: 10.1186/s43046-021-00095-z. PMID: 34897558.