Makay, OzerOzcinar, BeyzaSimsek, TurgayArici, CumhurGungor, BulentOzbas, SerdarGulluoglu, Bahadir M.2024-05-252024-05-25201762146-31232146-313110.4274/balkanmedj.2015.08652-s2.0-85013819579https://doi.org/10.4274/balkanmedj.2015.0865https://hdl.handle.net/20.500.14517/218Ibrahim Ali Ozemir, İbrahim Ali Özemir/0000-0001-8693-9358; Ozbas, Serdar/0000-0002-8019-8015; Deveci, Ugur/0000-0003-4449-1190; Emre, Ali Ugur/0000-0002-1136-0517; Erel, Serap/0000-0001-7365-883X; CAKMAK, Guldeniz KARADENIZ/0000-0001-5802-4441Background: Environmental habitat may play a role in clinical disparities of primary hyperparathyroidism (pHPT) patients. Aims: To compare preoperative clinical symptoms and associated conditions and surgical findings in patients with pHPT, living in different geographical regions from the Black Sea, Mediterranean and Anatolia regions. Study Design: Retrospective, clinical-based multicentric study of 694 patients with pHPT. Methods: Patients from 23 centers and 8 different geographical regions were included. Data related to baseline demographics, clinical, pathologic and treatment characteristics of 8 regions were collected and included age, gender, residential data, symptoms, history of fracture, existence of brown tumor, serum total Ca and p levels, serum parathormone (PTH) levels, serum 25-OH vitamin D levels, bone mineral density, size of the resected abnormal parathyroid gland(s), histology, as well as the presence of ectopia, presence of dual adenoma, and multiple endocrine neoplasia (MEN)- or familial-related disease. Results: The median age was 54. Asymptomatic patient rate was 25%. The median PTH level was 232 pg/mL and serum total Ca was 11.4 mg/dL. Eighty-seven percent of patients had an adenoma and 90% of these had a single adenoma. Hyperplasia was detected in 79 patients and cancer in 9 patients. The median adenoma size was 16 mm. Significant parameters differing between regions were preoperative symptoms, serum Ca and p levels, and adenoma size. All patients from South-East Anatolia were symptomatic, while the lowest p values were reported from East Anatolia and the largest adenoma size, as well as highest Ca levels, were from Bulgaria. Conclusion: Habitat conditions vary between geographical regions. This affects the clinicopathological features of patients with pHPT.eninfo:eu-repo/semantics/openAccessHyperparathyroidismclinocopathological featuresregional differencesTurkeyBulgariaArticleQ2Q13412834WOS:00039636190000428251020