title: Maxillary mesenchymal chondrosarcoma presenting with epistaxis in a child.
abstract: Mesenchymal chondrosarcomas are a rare variant of primary chondrosarcomas and can pose a diagnostic dilemma, especially when the features on conventional imaging are equivocal for an aggressive lesion. There is very little PET-CT experience in mesenchymal chondrosarcomas as per the literature and to the best of our knowledge, we are the first to describe a maxillary mesenchymal chondrosarcoma on PET-CT imaging. We report a case where PET-CT not only complemented conventional imaging in suspecting a malignant osseous lesion, but also was indicative of the grade of the tumor.
authors.affiliation: Department of Diagnostic Radiology, National University Hospital, Singapore.
authors.forename: Srinivas Anand Swaroop
authors.initials: SA
authors.lastname: Uppaluri
authors.affiliation: Department of Diagnostic Radiology, National University Hospital, Singapore.
authors.forename: Loi Hoi
authors.initials: LH
authors.lastname: Yin
authors.affiliation: Department of Pathology, National University Hospital, Singapore.
authors.forename: Giap Hean
authors.initials: GH
authors.lastname: Goh
mesh_terms: D000293:Adolescent; D018211:Chondrosarcoma, Mesenchymal / Q000175:diagnosis* / Q000209:etiology / Q000601:surgery; D003937:Diagnosis, Differential; D003952:Diagnostic Imaging; D004844:Epistaxis / Q000209:etiology*; D019788:Fluorodeoxyglucose F18; D006801:Humans; D008297:Male; D008441:Maxillary Neoplasms / Q000175:diagnosis* / Q000209:etiology / Q000601:surgery; D060787:Neoplasm Grading; D019275:Radiopharmaceuticals; D016896:Treatment Outcome
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18
keywords: Maxilla; PET-CT; chondrosarcoma; epistaxis; hypermetabolic; mesenchymal