title: A case of giant squamous cell carcinoma of the buttock possibly arose from syringocystadenoma and invaded to the rectum.
abstract: We report a rare case of giant squamous cell carcinoma of the buttock infiltrated to the rectum. The tumor may have arisen from syringocystadenoma papilliferum. Since there was no sign of metastasis, radical operation including rectal amputation was performed after successful neoadjuvant therapies. Afterwards, the patient has been alive free from disease for 15 months with no lymph node and distant organ metastasis.
authors.affiliation: Department of Dermatology, Course of Integrated Medicine, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita-shi, Osaka 565-0871, Japan.
authors.forename: Megumi
authors.initials: M
authors.lastname: Nishioka
authors.forename: Atsushi
authors.initials: A
authors.lastname: Tanemura
authors.forename: Takashi
authors.initials: T
authors.lastname: Yamanaka
authors.forename: Noriko
authors.initials: N
authors.lastname: Umegaki
authors.forename: Mamori
authors.initials: M
authors.lastname: Tani
authors.forename: Ichiro
authors.initials: I
authors.lastname: Katayama
authors.forename: Ichiro
authors.initials: I
authors.lastname: Takemasa
authors.forename: Mitsugu
authors.initials: M
authors.lastname: Sekimoto
authors.forename: Koichi
authors.initials: K
authors.lastname: Tomita
authors.forename: Noriyuki
authors.initials: N
authors.lastname: Tamai