1. Multiple Endocrine Neoplasia Type 1 with Functional Parathyroid Cysts
- Author
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Kenichiro Narisawa, Nobuyuki Koyama, Tomoyuki Fujita, Yoshiya Katsura, Minoru Fujimori, Masahiko Kure, Terumasa Nagase, Tomoya Ishii, Yukihisa Takeda, Koichiro Kogure, and Tomotada Odaka
- Subjects
Pathology ,medicine.medical_specialty ,endocrine system diseases ,medicine.medical_treatment ,Scintigraphy ,Multiple Endocrine Neoplasia Type 1 ,Internal Medicine ,medicine ,Humans ,Missense mutation ,Pituitary Neoplasms ,Prolactinoma ,MEN1 ,Multiple endocrine neoplasia ,Subclinical infection ,Parathyroidectomy ,medicine.diagnostic_test ,Cysts ,business.industry ,General Medicine ,Middle Aged ,medicine.disease ,Autotransplantation ,Female ,business ,Primary hyperparathyroidism - Abstract
A 51-year-old woman was admitted because of hypercalcemia. Neck ultrasonography and computed tomography revealed the presence of parathyroid cysts on both sides. After primary hyperparathyroidism was diagnosed by technetium-99m-methoxyisobutylisonitrile scintigraphy, the patient was successfully treated with total parathyroidectomy and autotransplantation. She also had a non-functioning pancreatic neuroendocrine tumor, prolactinoma, and adrenal tumors with subclinical Cushing's syndrome. Given these clinical features and her family history, multiple endocrine neoplasia type 1 (MEN1) was suspected, and germline DNA sequencing revealed a missense mutation (c.1013TC, [corrected] p.Leu338Pro) in exon 7 of MEN1. This case demonstrates the phenotypic and genetic diversity of MEN1.
- Published
- 2022