title: Urinary bladder metastasis from lung adenocarcinoma: A rare cause of hematuria.
abstract: We presented an unusual case of hematuria caused by a solitary bladder metastasis from lung adenocarcinoma. A confident diagnosis of secondary adenocarcinoma of the bladder was made by clinical suspicion based on patient's past history, careful examination of tumor morphology, and a directed panel (cytokeratin [CK] 7/CK20/thyroid transcription factor 1) of immunohistochemistry. We sought, through sharing our experience in the investigative and diagnostic process, to contribute to the better understanding of this unusual cause of hematuria.
authors.affiliation: Department of Surgery, Queen Elizabeth Hospital, Hong Kong, China.
authors.forename: Kan Wai Man
authors.initials: KW
authors.lastname: Raymond
authors.affiliation: Department of Pathology, Queen Elizabeth Hospital, Hong Kong, China.
authors.forename: Ting Shun
authors.initials: TS
authors.lastname: Hin
authors.affiliation: Department of Surgery, Queen Elizabeth Hospital, Hong Kong, China.
authors.forename: Kan Chi
authors.initials: KC
authors.lastname: Fai
authors.affiliation: Department of Surgery, Queen Elizabeth Hospital, Hong Kong, China.
authors.forename: Chan Wai Hee
authors.initials: CW
authors.lastname: Steve
keywords: Adenocarcinoma; bladder metastasis; hematuria