PMID- 15272285 OWN - NLM STAT- MEDLINE DCOM- 20050509 LR - 20230210 IS - 0893-3952 (Print) IS - 0893-3952 (Linking) VI - 18 IP - 3 DP - 2005 Mar TI - Comparative genomic hybridization analysis of thymic neuroendocrine tumors. PG - 358-64 AB - Thymic neuroendocrine (carcinoid) tumors are a rare neoplasm of the anterior mediastinum. The tumors frequently exhibit a wide spectrum of histology and appear to follow a more aggressive behavior than their nonthymic counterparts. Given the differing clinicopathologic manifestations, thymic neuroendocrine tumors may also possess different cytogenetic abnormalities from those that occur in foregut carcinoid tumors. In this study, we employed comparative genomic hybridization to detect genomic instability in 10 sporadic thymic neuroendocrine tumors and one multiple endocrine neoplasia type 1 (MEN1)-associated case. Gross chromosomal imbalances were found in nine cases, including gains of chromosomal material on regions X, 8, 18 and 20p and losses on 3, 6, 9q, 13q and 11q. We did not observe deletion at locus 11q13 where the MEN1 gene is located. These findings were essentially dissimilar to those reported in sporadic and MEN1-associated foregut carcinoid tumors. Consequently, we consider that a distinctive cytogenetic mechanism is at work in the development of thymic neuroendocrine tumors, which is different from that of foregut carcinoid tumors. FAU - Pan, Chin-Chen AU - Pan CC AD - Department of Pathology, National Yang-Ming University, Taipei, Taiwan. FAU - Jong, Yiin-Jeng AU - Jong YJ FAU - Chen, Yann-Jang AU - Chen YJ LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Mod Pathol JT - Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc JID - 8806605 SB - IM MH - Adult MH - Aged MH - Chromosome Aberrations MH - Female MH - Humans MH - Male MH - Middle Aged MH - Neoplasm Staging MH - Neuroendocrine Tumors/*genetics/pathology MH - Nucleic Acid Hybridization/*methods MH - Survival Analysis MH - Thymus Neoplasms/*genetics/pathology EDAT- 2004/07/24 05:00 MHDA- 2005/05/10 09:00 CRDT- 2004/07/24 05:00 PHST- 2004/07/24 05:00 [pubmed] PHST- 2005/05/10 09:00 [medline] PHST- 2004/07/24 05:00 [entrez] AID - S0893-3952(22)04163-1 [pii] AID - 10.1038/modpathol.3800246 [doi] PST - ppublish SO - Mod Pathol. 2005 Mar;18(3):358-64. doi: 10.1038/modpathol.3800246.