title: Myxoid chondrosarcoma of the sinonasal cavity in a child: a case report.
abstract: Chondrosarcomas are malignant tumors of cartilage that rarely involve the sinonasal region, and myxoid chondrosarcoma is a rare histologic variant of chondrosarcoma that usually occurs in the soft tissue of extremities. Although several case reports and results of small series of chondrosarcomas in the sinonasal region in children are available, myxoid type chondrosarcoma is extremely rare. We recently experienced a case of low grade myxoid chondrosarcoma involving the sinonasal cavity in a 10-year-old boy, and here we report its radiologic-pathologic findings. In this case, chondroid calcification on CT and septal and marginal enhancement on MRI suggested a chondrosarcoma. Whole body PET-CT demonstrated no definite metastatic lesion and a low peak standardized uptake value primary tumor. However, no definite distinguishing imaging features were observed that distinguished low grade myxoid chondrosarcoma from conventional chondrosarcoma.
authors.affiliation: Department of Radiology, Kangnam St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea.
authors.forename: Yeo Ju
authors.initials: YJ
authors.lastname: Kim
authors.forename: Soo Ah
authors.initials: SA
authors.lastname: Im
authors.forename: Gye-Yeon
authors.initials: GY
authors.lastname: Lim
authors.forename: Ho Jong
authors.initials: HJ
authors.lastname: Chun
authors.forename: Hyun Jin
authors.initials: HJ
authors.lastname: Park
authors.forename: Min Sik
authors.initials: MS
authors.lastname: Kim
authors.forename: Yeong Jin
authors.initials: YJ
authors.lastname: Choi
mesh_terms: D001859:Bone Neoplasms / Q000175:diagnosis* / Q000532:radiotherapy / Q000601:surgery; D002648:Child; D002813:Chondrosarcoma / Q000175:diagnosis* / Q000532:radiotherapy / Q000601:surgery; D003937:Diagnosis, Differential; D005500:Follow-Up Studies; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009236:Myxosarcoma / Q000175:diagnosis* / Q000532:radiotherapy / Q000601:surgery; D009296:Nasal Cavity / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery; D010256:Paranasal Sinuses / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery; D049268:Positron-Emission Tomography; D035583:Rare Diseases; D014057:Tomography, X-Ray Computed; D051598:Whole Body Imaging