title: A large pelvic soft tissue mass implied by subtle bone scan findings.
abstract: An 18-year-old man with alveolar rhabdomyosarcoma and osseous metastases underwent bone scintigraphy to monitor the effect of chemotherapy. The images showed significant improvement of bone lesions. However, the scan revealed a vertically shaped urinary bladder and diffused increased activity in the genital region. A diagnostic pelvic CT was subsequently performed, which showed a thickened bladder wall, an ill-defined pelvic mass, and extensive subcutaneous edema in the genital region.
authors.affiliation: From the *Department of Nuclear Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China; and †Department of Radiology, Children's Hospital of Philadelphia, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA.
authors.forename: Jianmin
authors.initials: J
authors.lastname: Huang
authors.forename: Sherwin
authors.initials: S
authors.lastname: Chan
authors.forename: Sabah
authors.initials: S
authors.lastname: Servase
authors.forename: Hongming
authors.initials: H
authors.lastname: Zhuang
mesh_terms: D000293:Adolescent; D006801:Humans; D008297:Male; D010384:Pelvic Bones / Q000000981:diagnostic imaging*; D018232:Rhabdomyosarcoma, Alveolar / Q000000981:diagnostic imaging* / Q000188:drug therapy / Q000473:pathology; D014057:Tomography, X-Ray Computed