title: Squamous carcinoma of the lung metastases to the patella.
abstract: We report a case of a 65-year-old man with newly diagnosed squamous carcinoma of the lung, who presented with worsening left-knee pain. A bone scintigraphy displayed an increased radioactivity in the left patella. The patient underwent left patellectomy. Histopathological examination revealed metastasis to the patella from the known lung cancer.
authors.affiliation: From the *Department of Orthopedics, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei; and †Postgraduate School, Tianjin Medical University, Heping, Tianjin, People's Republic of China.
authors.forename: Helin
authors.initials: H
authors.lastname: Feng
authors.forename: Huan
authors.initials: H
authors.lastname: Li
authors.forename: Jin
authors.initials: J
authors.lastname: Wang
authors.forename: Xiaoyu
authors.initials: X
authors.lastname: Zhang
authors.forename: Jiangang
authors.initials: J
authors.lastname: Feng
mesh_terms: D000368:Aged; D001859:Bone Neoplasms / Q000000981:diagnostic imaging* / Q000556:secondary; D002294:Carcinoma, Squamous Cell / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D008297:Male; D010329:Patella / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging