PMID- 33334800 OWN - NLM STAT- MEDLINE DCOM- 20210611 LR - 20240102 IS - 1550-8080 (Electronic) IS - 0091-7370 (Linking) VI - 50 IP - 6 DP - 2020 Nov TI - Thymic Carcinoid as the First Manifestation of Multiple Endocrine Neoplasia Type 1 Syndrome: A Case Report and Review of the Literature. PG - 825-833 AB - The present study reported a rare case with thymic carcinoid as the first manifestation of multiple endocrine neoplasia type 1 (MEN1) syndrome, which presented with gene mutations of the MEN1 and glucokinase regulatory protein (GCKR). In this report, a 40-year-old male was diagnosed as MEN1 syndrome with thymic carcinoid, pancreatic cancer, hyperparathyroidism, and insulinoma with intrahepatic metastasis. Genetic testing showed the mutations of the MEN1 (c.378 G>A, p. Trp126*) in the patient, his children and two sisters, and GCKR (c.151C>T, p. Arg51*) gene in the patient and his children. The pathological examination showed that neuroendocrine tumor (NET) of the pancreas was characterized as 6 mitoses per 10 high-power fields (HPF), infiltration of adipose tissue, no intravascular tumor thrombus and nerve infiltration. In addition, NET of the liver was characterized as 4 mitoses per 10 HPF, no intravascular tumor thrombus and nerve infiltration. Immunohistochemical staining showed Ckpan (+), Syn (+), CgA (+), CD 56 (+), PGP 9.5 (+), and Ki67-positive cells (8-10%) in NET. Therefore, we suggested that genetic testing in family members of MEN1 patient, which may be helpful for early diagnosis. CI - (c) 2020 by the Association of Clinical Scientists, Inc. FAU - Zheng, Meiling AU - Zheng M AD - Department of Endocrinology, Hebei General Hospital, Shijiazhaung, China. FAU - Chen, Shuchun AU - Chen S AD - Department of Endocrinology, Hebei General Hospital, Shijiazhaung, China chenshuchunwork88@163.com renluping1122@163.com. FAU - Qi, Cuijuan AU - Qi C AD - Department of Endocrinology, Hebei General Hospital, Shijiazhaung, China. FAU - Ren, Luping AU - Ren L AD - Department of Endocrinology, Hebei General Hospital, Shijiazhaung, China chenshuchunwork88@163.com renluping1122@163.com. FAU - Zhen, Yunfeng AU - Zhen Y AD - Department of Endocrinology, Hebei General Hospital, Shijiazhaung, China. FAU - Yu, Xian AU - Yu X AD - Department of Endocrinology, Hebei General Hospital, Shijiazhaung, China. FAU - Wei, Limin AU - Wei L AD - Department of Endocrinology, Hebei General Hospital, Shijiazhaung, China. LA - eng PT - Case Reports PT - Journal Article PT - Review PL - United States TA - Ann Clin Lab Sci JT - Annals of clinical and laboratory science JID - 0410247 RN - 0 (Adaptor Proteins, Signal Transducing) RN - 0 (GCKR protein, human) RN - 0 (MEN1 protein, human) RN - 0 (Proto-Oncogene Proteins) SB - IM MH - Adaptor Proteins, Signal Transducing/genetics MH - Adult MH - Carcinoid Tumor/genetics/*pathology MH - Humans MH - Male MH - Multiple Endocrine Neoplasia/diagnosis/genetics/metabolism MH - Multiple Endocrine Neoplasia Type 1/*diagnosis/genetics/*metabolism MH - Neuroendocrine Tumors MH - Pancreatic Neoplasms MH - Proto-Oncogene Proteins/genetics MH - Thymoma/diagnosis/metabolism/pathology OTO - NOTNLM OT - Gene mutation OT - Hyperparathyroidism OT - Multiple endocrine neoplasia type 1 (MEN1) OT - Pancreatic cancer OT - Prolactinoma OT - Thymic carcinoid EDAT- 2020/12/19 06:00 MHDA- 2021/06/12 06:00 CRDT- 2020/12/18 05:40 PHST- 2020/12/18 05:40 [entrez] PHST- 2020/12/19 06:00 [pubmed] PHST- 2021/06/12 06:00 [medline] AID - 50/6/825 [pii] PST - ppublish SO - Ann Clin Lab Sci. 2020 Nov;50(6):825-833.