PMID- 34367700 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210810 IS - 2090-6501 (Print) IS - 2090-651X (Electronic) IS - 2090-651X (Linking) VI - 2021 DP - 2021 TI - Multiple Endocrine Neoplasia Type 1 with Concomitant Existence of Malignant Insulinoma: A Rare Finding. PG - 8842667 LID - 10.1155/2021/8842667 [doi] LID - 8842667 AB - Multiple endocrine neoplasia type 1 (MEN1) is a rare syndrome of autosomal dominant inheritance defined by co-occurrence of two or more tumors originating from the parathyroid gland, pancreatic islet cells, and/or anterior pituitary. Insulinoma which has an incidence of 0.4% is a rare pancreatic neuroendocrine tumor. Malignant insulinoma is extremely rare, while primary hyperparathyroidism is a common occurrence in MEN1. We present a case of MEN1 syndrome with 2.6 cm insulinoma in the pancreatic head and parathyroid adenoma in a 56-year-old female who presented with symptoms suggestive of hypoglycemia like multiple episodes of loss of consciousness for four years. Classical pancreaticoduodenectomy was carried out, and the postoperative period was uneventful. Later, subtotal parathyroidectomy was performed, which showed parathyroid adenoma. Patients presenting with features of hypoglycemia should be vigilantly assessed for the presence of a sinister pathology. CI - Copyright (c) 2021 Randhir Sagar Yadav et al. FAU - Yadav, Randhir Sagar AU - Yadav RS AUID- ORCID: 0000-0003-4075-3544 AD - Maharajgunj Medical Campus, Institute of Medicine, Tribhuvan University, Kathmandu, Nepal. FAU - Pokharel, Ashik AU - Pokharel A AD - Department of Gastrointestinal and General Surgery, Tribhuvan University Teaching Hospital, Kathmandu, Nepal. FAU - Gaire, Deepshikha AU - Gaire D AD - Department of Pathology, Tribhuvan University Teaching Hospital, Kathmandu, Nepal. FAU - Shrestha, Shumneva AU - Shrestha S AUID- ORCID: 0000-0001-7368-7884 AD - Maharajgunj Medical Campus, Institute of Medicine, Tribhuvan University, Kathmandu, Nepal. FAU - Pokharel, Ashbita AU - Pokharel A AD - Maharajgunj Medical Campus, Institute of Medicine, Tribhuvan University, Kathmandu, Nepal. FAU - Pradhan, Sumita AU - Pradhan S AD - Department of Gastrointestinal and General Surgery, Tribhuvan University Teaching Hospital, Kathmandu, Nepal. FAU - Kansakar, Prasan Bir Singh AU - Kansakar PBS AD - Department of Gastrointestinal and General Surgery, Tribhuvan University Teaching Hospital, Kathmandu, Nepal. LA - eng PT - Case Reports DEP - 20210728 PL - United States TA - Case Rep Endocrinol JT - Case reports in endocrinology JID - 101576457 PMC - PMC8337156 COIS- The authors declare that they have no conflicts of interest. EDAT- 2021/08/10 06:00 MHDA- 2021/08/10 06:01 PMCR- 2021/07/28 CRDT- 2021/08/09 06:36 PHST- 2020/08/27 00:00 [received] PHST- 2021/06/11 00:00 [revised] PHST- 2021/07/23 00:00 [accepted] PHST- 2021/08/09 06:36 [entrez] PHST- 2021/08/10 06:00 [pubmed] PHST- 2021/08/10 06:01 [medline] PHST- 2021/07/28 00:00 [pmc-release] AID - 10.1155/2021/8842667 [doi] PST - epublish SO - Case Rep Endocrinol. 2021 Jul 28;2021:8842667. doi: 10.1155/2021/8842667. eCollection 2021.