PMID- 22906432 OWN - NLM STAT- MEDLINE DCOM- 20130325 LR - 20121017 IS - 1618-0631 (Electronic) IS - 0344-0338 (Linking) VI - 208 IP - 10 DP - 2012 Oct 15 TI - Gonadoblastoma: Case report of two young patients with isochromosome 12p found in the dysgerminoma overgrowth component in one case. PG - 628-32 LID - S0344-0338(12)00213-0 [pii] LID - 10.1016/j.prp.2012.07.006 [doi] AB - Gonadoblastomas are unusual neoplasias that frequently appear in the dysgenetic gonads of women with chromosome Y anomaly. We present two cases of gonadoblastoma associated with complete gonadal dysgenesis and Turner syndrome, respectively, with dysgerminoma overgrowth found in one case. We were interested in the DNA ploidy, the presence of Y chromosome DNA sequence and the status of chromosome 12p arm among the tumor cells. We performed cytophotometry to analyze the DNA content and fluorescence in situ hybridization (FISH) to identify the Y chromosome and the isochromosome 12p within the tumor cells. The cytophotometric result showed diploid DNA content in gonadoblastoma, whereas dysgerminoma revealed aneuploid DNA. The FISH result revealed Y chromosome DNA sequence within gonadoblastoma and dysgerminoma. Isochromosome 12p was identified in dysgerminoma, but not in gonadoblastoma. We conclude that gonadoblastoma and dysgerminoma have a strong association with the Y chromosome, and dysgerminoma overgrowth is due to further chromosomal aberrations, such as isochromosome 12p. Histological, immunohistocheimcal and molecular studies should render the correct diagnosis. Identifying dysgerminoma overgrowth is crucial since it is associated with adverse prognosis and requires additional therapy. CI - Copyright (c) 2012 Elsevier GmbH. All rights reserved. FAU - Changchien, Yi-Che AU - Changchien YC AD - 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary. ccwilly@hotmail.com FAU - Haltrich, Iren AU - Haltrich I FAU - Micsik, Tamas AU - Micsik T FAU - Kiss, Eszter AU - Kiss E FAU - Fonyad, Laszlo AU - Fonyad L FAU - Papp, Gergo AU - Papp G FAU - Sapi, Zoltan AU - Sapi Z LA - eng PT - Case Reports PT - Journal Article DEP - 20120818 PL - Germany TA - Pathol Res Pract JT - Pathology, research and practice JID - 7806109 RN - Pallister Killian syndrome SB - IM MH - Adolescent MH - Chromosome Disorders/*genetics/pathology/therapy MH - Chromosomes, Human, Pair 12/genetics MH - Chromosomes, Human, Y MH - Cytophotometry MH - Dysgerminoma/*genetics/pathology/therapy MH - Female MH - Genetic Predisposition to Disease MH - Genetic Testing MH - Gonadal Dysgenesis, 46,XY/*genetics/pathology/therapy MH - Gonadoblastoma/*genetics/pathology/therapy MH - Humans MH - Immunohistochemistry MH - In Situ Hybridization, Fluorescence MH - Ovarian Neoplasms/*genetics/pathology/therapy MH - Phenotype MH - Ploidies MH - Predictive Value of Tests MH - Turner Syndrome/*genetics/pathology/therapy EDAT- 2012/08/22 06:00 MHDA- 2013/03/26 06:00 CRDT- 2012/08/22 06:00 PHST- 2012/03/12 00:00 [received] PHST- 2012/06/28 00:00 [revised] PHST- 2012/07/13 00:00 [accepted] PHST- 2012/08/22 06:00 [entrez] PHST- 2012/08/22 06:00 [pubmed] PHST- 2013/03/26 06:00 [medline] AID - S0344-0338(12)00213-0 [pii] AID - 10.1016/j.prp.2012.07.006 [doi] PST - ppublish SO - Pathol Res Pract. 2012 Oct 15;208(10):628-32. doi: 10.1016/j.prp.2012.07.006. Epub 2012 Aug 18.