12q amplification defines a subtype of extraskeletal osteosarcoma with good prognosis that is the soft tissue homologue of parosteal osteosarcoma

• Type: Another Publication in an International Scientific Journal
• Date: 2012

Authors

Kyriazoglou, AI (Author) Other; Vieira, J (Author) Other; Dimitriadis, E (Author) Other; Arnogiannaki, N (Author) Other; Manuel R Teixeira (Author) ICBAS; Pandis, N (Author) Other

Journal

Title: Cancer genetics

Vol. 205

Pages: 332-336

ISSN: 2210-7762

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 11 Citations

Scopus - 14 Citations

Other information

Authenticus ID: P-002-966

DOI: 10.1016/j.cancergen.2012.04.011

Abstract (EN): Extraskeletal osteosarcomas are rare tumors with neoplastic cells synthesizing bone, usually associated with poor prognosis. We present the case of a 40-year-old man with an extraskeletal osteosarcoma that was treated by surgery and adjuvant radiotherapy. Thirteen years after the diagnosis, he remains disease-free, without any recurrences or metastases. Histopathological analysis favored the diagnosis of chondroblastic extraskeletal osteosarcoma grade II. G-banding, comparative genomic hybridization (CGH), and real-time PCR for the MDM2 and CDK4 genes were performed to describe the genetic profile of this tumor and revealed aberrations that are common findings of parosteal osteosarcomas. Ring chromosomes, giant marker chromosomes, and a telomeric association were found with G-banding. CGH revealed that 12q was amplified in the ring and giant markers identified by G-banding. Real-time PCR for MDM2 and CDK4 confirmed the amplification of these genes located in 12q. Our findings suggest that a variant of extraskeletal osteosarcoma, which is genotypically similar to parosteal osteosarcoma, exists and is associated with good prognosis.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5