title: Imaging findings of childhood B-cell lymphoblastic lymphoma in the mental region: a case report.
abstract: Lymphoblastic lymphoma (LBL) is an uncommon neoplasm that accounts for about 5% of all non-Hodgkin's lymphomas. Approximately 90% of LBLs are of immature T-cell lineage, with B-cell lymphoblastic lymphoma (B-LBL) accounting for only about 10%. Owing to infrequency, the clinicopathological features and the imaging findings of B-LBL are not well defined. LBLs frequently affect extranodal sites. The most common site is the skin, followed by the bone, and the head and neck region is rarely involved. We report herein a case of childhood B-LBL occurring in the mental region, with emphasis on the findings of several imaging studies, including contrast-enhanced CT, MRI and fluorodeoxyglucose-positron emission tomography/CT.
authors.affiliation: 1 Oral and Maxillofacial Radiology, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan.
authors.forename: Phong D
authors.initials: PD
authors.lastname: Lam
authors.affiliation: 1 Oral and Maxillofacial Radiology, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan.
authors.forename: Ami
authors.initials: A
authors.lastname: Kuribayashi
authors.affiliation: 1 Oral and Maxillofacial Radiology, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan.
authors.forename: Junichiro
authors.initials: J
authors.lastname: Sakamoto
authors.affiliation: 1 Oral and Maxillofacial Radiology, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan.
authors.forename: Shin
authors.initials: S
authors.lastname: Nakamura
authors.affiliation: 2 Oral and Maxillofacial Surgery, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Harada
authors.affiliation: 1 Oral and Maxillofacial Radiology, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan.
authors.forename: Tohru
authors.initials: T
authors.lastname: Kurabayashi
mesh_terms: D002648:Child; D002680:Chin; D005153:Facial Neoplasms / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D016393:Lymphoma, B-Cell / Q000000981:diagnostic imaging*; D054198:Precursor Cell Lymphoblastic Leukemia-Lymphoma / Q000000981:diagnostic imaging*
keywords: B-cell lymphoblastic lymphoma; CT; FDG-PET/CT; MRI; head and neck