title: Perivascular epithelioid cell tumor of the rectum: report of a case and review of the literature.
abstract: We report a case of perivascular epithelioid cell tumor arising in the rectum of a 55-year-old woman. The tumor was treated by transanal endoscopic microsurgery. After 1 year follow-up, the patient is alive with no radiologic or endoscopic evidence of recurrence. Perivascular epithelioid cell tumor is a rare mesenchymal tumor characterized by co-expression of melanocytic and smooth muscle markers. This rare tumor can arise in various organs, including the falciform ligament, uterus, uterine cervix, liver, kidney, lung, breast, cardiac septum, pancreas, prostate, thigh, and gastrointestinal tract. Perivascular epithelioid cell tumor of the gastrointestinal tract is very rare, with only 23 previously reported cases. We review the literature on perivascular epithelioid cell tumors arising in the gastrointestinal tract.
authors.affiliation: Gastroenterological Center, Yokohama City University Medical Center, 4-57 Urafune-cho Minami-ku, Yokohama-shi, Kanagawa-ken 232-0024, Japan. amanex2009@gmail.com.
authors.forename: Amane
authors.initials: A
authors.lastname: Kanazawa
authors.forename: Shoichi
authors.initials: S
authors.lastname: Fujii
authors.forename: Ten-i
authors.initials: TI
authors.lastname: Godai
authors.forename: Atsushi
authors.initials: A
authors.lastname: Ishibe
authors.forename: Takashi
authors.initials: T
authors.lastname: Oshima
authors.forename: Tadao
authors.initials: T
authors.lastname: Fukushima
authors.forename: Mitsuyoshi
authors.initials: M
authors.lastname: Ota
authors.forename: Norio
authors.initials: N
authors.lastname: Yukawa
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Rino
authors.forename: Toshio
authors.initials: T
authors.lastname: Imada
authors.forename: Junko
authors.initials: J
authors.lastname: Ito
authors.forename: Akinori
authors.initials: A
authors.lastname: Nozawa
authors.forename: Munetaka
authors.initials: M
authors.lastname: Masuda
authors.forename: Chikara
authors.initials: C
authors.lastname: Kunisaki
mesh_terms: D005260:Female; D006801:Humans; D008875:Middle Aged; D054973:Perivascular Epithelioid Cell Neoplasms / Q000473:pathology* / Q000601:surgery; D011379:Prognosis; D012004:Rectal Neoplasms / Q000473:pathology* / Q000601:surgery