PMID- 22892832 OWN - NLM STAT- MEDLINE DCOM- 20121231 LR - 20211021 IS - 1432-2307 (Electronic) IS - 0945-6317 (Linking) VI - 461 IP - 4 DP - 2012 Oct TI - Morphological and molecular characteristics of nested melanoma of the elderly (evolved lentiginous melanoma). PG - 433-9 LID - 10.1007/s00428-012-1293-0 [doi] AB - We identified a group of melanocytic lesions with an architectural pattern very similar to that of a junctional nevus: cells mostly grouped in distinct nests, more or less of the same size and shape, and regularly distributed along the dermoepidermal junction. In contrast with these nevus-like features, these neoplasms display additional details which are incompatible with a diagnosis of junctional nevus. These include areas of lentiginous array with focal pagetoid spread of melanocytes above the junction; marked cytological atypia, such as nuclear enlargement, hyperchromasia, nuclear membrane thickening and with a mild degree of cellular pleomorphism. Moreover, these lesions mostly developed on severely sun-damaged skin of old patients. Using a four-probe fluorescence in situ hybridization (FISH) assay targeting RREB1, MYB, Cep6, and CCND1, we found that seven of the eight propositus cases showed chromosomal aberrations consistent with the standardized FISH diagnostic criteria for melanoma. Instead, the five junctional nevi that served as controls were negative in this test. These findings underline the utility of correlating clinical-pathological observations with FISH analysis for diagnosing correctly as melanoma these malignant neoplasms, which closely simulate a junctional nevus. FAU - Pennacchia, Ilaria AU - Pennacchia I AD - Department of Pathology, Catholic University Medical School, Rome, Italy. ilaria.pennacchia@libero.it FAU - Garcovich, Simone AU - Garcovich S FAU - Gasbarra, Rita AU - Gasbarra R FAU - Leone, Alvaro AU - Leone A FAU - Arena, Vincenzo AU - Arena V FAU - Massi, Guido AU - Massi G LA - eng PT - Case Reports PT - Journal Article DEP - 20120815 PL - Germany TA - Virchows Arch JT - Virchows Archiv : an international journal of pathology JID - 9423843 RN - Epidermal Nevus SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Cell Nucleus/pathology MH - Chromosome Aberrations MH - Diagnosis, Differential MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence MH - Melanoma/diagnosis/*genetics/*pathology MH - Middle Aged MH - Nevus MH - Nevus, Pigmented/diagnosis/genetics/*pathology MH - Prognosis MH - Sensitivity and Specificity MH - Skin Neoplasms/diagnosis/*genetics/*pathology EDAT- 2012/08/16 06:00 MHDA- 2013/01/01 06:00 CRDT- 2012/08/16 06:00 PHST- 2012/02/21 00:00 [received] PHST- 2012/07/23 00:00 [accepted] PHST- 2012/07/11 00:00 [revised] PHST- 2012/08/16 06:00 [entrez] PHST- 2012/08/16 06:00 [pubmed] PHST- 2013/01/01 06:00 [medline] AID - 10.1007/s00428-012-1293-0 [doi] PST - ppublish SO - Virchows Arch. 2012 Oct;461(4):433-9. doi: 10.1007/s00428-012-1293-0. Epub 2012 Aug 15.