PMID- 22415057 OWN - NLM STAT- MEDLINE DCOM- 20120907 LR - 20120518 IS - 1940-2465 (Electronic) IS - 1066-8969 (Linking) VI - 20 IP - 3 DP - 2012 Jun TI - Use of fluorescence in situ hybridization to distinguish metastatic uveal from cutaneous melanoma. PG - 246-51 LID - 10.1177/1066896912438589 [doi] AB - Metastatic lesions of malignant melanoma can on occasion be difficult to classify with regard to the primary site of origin. Given the lack of specificity of light microscopic features, ancillary studies are needed. In this study, the authors explored the possibility of distinguishing metastatic tumors derived from uveal primaries from those known to have originated from a cutaneous melanoma by fluorescence in situ hybridization (FISH) using probes for chromosome 3, 8q24, and 1p36. A total of 32 metastatic tumors were analyzed by FISH. Monosomy 3 was detected in 9 out of 16 (56.3%) cases of metastatic uveal melanoma but was not found in any of the 16 metastatic cutaneous melanomas (P < .001). With regard to 1p36, amplifications were found in 8 out of 16 (50%) cases of metastatic cutaneous melanoma but not in any case of uveal melanoma (P < .05). 1p36 was deleted in 3 cases of uveal and 1 case of cutaneous melanoma. Amplifications of 8q were found in 15 out of 16 (94%) cases of uveal melanoma metastases and in 12 out of 16 (75%) cases of cutaneous metastases. The findings suggest that FISH for monosomy 3 is a useful adjunct tool in the differential diagnosis of metastatic uveal versus cutaneous melanoma. FAU - Fang, Yuqiang AU - Fang Y AD - Department of Pathology, Memorial Sloan-Kettering Cancer Center, New York, NY 10065, USA. FAU - Wang, Xuan AU - Wang X FAU - Dusza, Stephen AU - Dusza S FAU - Jhanwar, Suresh AU - Jhanwar S FAU - Abramson, David AU - Abramson D FAU - Busam, Klaus J AU - Busam KJ LA - eng PT - Journal Article DEP - 20120313 PL - United States TA - Int J Surg Pathol JT - International journal of surgical pathology JID - 9314927 SB - IM MH - Adult MH - Aged MH - Diagnosis, Differential MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence MH - Male MH - Melanoma/*genetics/*secondary MH - Middle Aged MH - Skin Neoplasms/*genetics/*secondary MH - Uveal Neoplasms/*genetics/*pathology MH - Young Adult EDAT- 2012/03/15 06:00 MHDA- 2012/09/08 06:00 CRDT- 2012/03/15 06:00 PHST- 2012/03/15 06:00 [entrez] PHST- 2012/03/15 06:00 [pubmed] PHST- 2012/09/08 06:00 [medline] AID - 1066896912438589 [pii] AID - 10.1177/1066896912438589 [doi] PST - ppublish SO - Int J Surg Pathol. 2012 Jun;20(3):246-51. doi: 10.1177/1066896912438589. Epub 2012 Mar 13.