title: [A case of idiopathic aseptic osteonecrosis of the patellae: repeat study of Tc-99m HMDP bone scintigraphy in a reparative phase].
abstract: A 37-year-old woman entered our hospital because of bilateral knee pain. Tc-99m HMDP bone scintigram demonstrated increased activity in the bilateral patellae and cold lesion in the center and left lateral segments of the left patellae, so-called doughnut pattern. Trephine biopsy was performed to prove bilateral idiopathic asepct osteonecrosis of the patellae. The knee pain subsided and a bone scan 5 months later demonstrated increased activity in the bilateral patellae more widely than initial scan. We report the usefulness of Tc-99m HMDP bone scintigraphy to observe a reparative phase of idiopathic asepct osteonecrosis of the patellae.
authors.affiliation: Department of Radiology, Sapporo Medical College.
authors.forename: A
authors.initials: A
authors.lastname: Iwakubo
authors.forename: T
authors.initials: T
authors.lastname: Tsuda
authors.forename: M
authors.initials: M
authors.lastname: Kubota
authors.forename: K
authors.initials: K
authors.lastname: Iba
authors.forename: J
authors.initials: J
authors.lastname: Wakabayashi
authors.forename: K
authors.initials: K
authors.lastname: Morita
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D010020:Osteonecrosis / Q000000981:diagnostic imaging* / Q000473:pathology; D010329:Patella / Q000000981:diagnostic imaging* / Q000473:pathology; D011877:Radionuclide Imaging; D013669:Technetium Tc 99m Medronate / Q000031:analogs & derivatives
chemical_list: C024226:technetium Tc 99m hydroxymethylene diphosphonate; D013669:Technetium Tc 99m Medronate