title: Drop metastasis of adrenocorticotropic hormone-producing pituitary carcinoma to the cauda equina.
abstract: The diagnosis of pituitary carcinoma cannot be made easily histologically, and most cases of pituitary carcinoma are diagnosed only after the clinical detection of metastasis. Distant metastasis of pituitary tumor occurs in 0.1% to 0.2% of cases and has been reported in the liver, bone and central nervous system, with only one case of metastasis to the cauda equine reported. This study describes a rare case of the drop metastasis of adrenocorticotropic hormone-producing pituitary adenocarcinoma to the cauda equina, causing cauda equina syndrome.
authors.affiliation: Department of Orthopaedic Surgery, Tokyo Women's Medical University, Tokyo, Japan.
authors.forename: Kenichi
authors.initials: K
authors.lastname: Takeuchi
authors.affiliation: Department of Orthopaedic Surgery, Tokyo Women's Medical University, Tokyo, Japan.
authors.forename: Yoko
authors.initials: Y
authors.lastname: Hagiwara
authors.affiliation: Department of Orthopaedic Surgery, Tokyo Women's Medical University, Tokyo, Japan.
authors.forename: Koichi
authors.initials: K
authors.lastname: Kanaya
authors.affiliation: Department of Orthopaedic Surgery, Tokyo Women's Medical University, Tokyo, Japan.
authors.forename: Keiji
authors.initials: K
authors.lastname: Wada
authors.affiliation: Department of Orthopaedic Surgery, Tokyo Women's Medical University, Tokyo, Japan.
authors.forename: Masahiro
authors.initials: M
authors.lastname: Shiba
authors.affiliation: Department of Orthopaedic Surgery, Tokyo Women's Medical University, Tokyo, Japan.
authors.forename: Yoshiharu
authors.initials: Y
authors.lastname: Kato
keywords: Adrenocorticotropic hormone; Cauda equine; Drop metastasis; Pituitary carcinoma