title: A unique case of spontaneous regression of metastatic papillary renal cell carcinoma: a case report.
abstract: Spontaneous regression of cancer is a rare, but well documented, phenomenon. We present a unique case of an 82 year old Chinese male who experienced spontaneous regression of histologically-verified metastatic type II papillary renal cell carcinoma in the absence of intervening systemic therapy or surgery. This is the first reported case of spontaneous regression of papillary renal cell carcinoma. The mechanism of spontaneous regression remains unknown, and represents a challenge for existing oncology paradigms.
authors.affiliation: Department of Medical Oncology, National Cancer Centre Singapore, Singapore 169610, Republic of Singapore. rebeccaqianru@gmail.com
authors.forename: Rebecca
authors.initials: R
authors.lastname: Lim
authors.forename: Puay Hoon
authors.initials: PH
authors.lastname: Tan
authors.forename: Christopher
authors.initials: C
authors.lastname: Cheng
authors.forename: Thirugnanam
authors.initials: T
authors.lastname: Agasthian
authors.forename: Hwei Ling
authors.initials: HL
authors.lastname: Tan
authors.forename: Bin Tean
authors.initials: BT
authors.lastname: Teh
authors.forename: Min-Han
authors.initials: MH
authors.lastname: Tan