TY - JOUR TT - Regional Clinical and Biochemical Differences among Patients with Primary Hyperparathyroidism AU - Stamatin, Maria AU - Makay, Özer AU - Özçınar, Beyza AU - Şimşek, Turgay AU - Arıcı, Cumhur AU - Güngör, Bülent AU - Özbaş, Serdar AU - Akça, Tamer AU - Emre, Ali Uğur AU - Çakmak, Güldeniz Karadeniz AU - Akçay, Müfide AU - Ünal, Bülent AU - Girgin, Mustafa AU - Girgin, Sadullah AU - Görgülü, Semih PY - 2017 DA - January JF - Balkan Medical Journal PB - Trakya Üniversitesi WT - DergiPark SN - 2146-3123 SP - 28 EP - 34 VL - 34 IS - 1 KW - Hyperparathyroidism KW - clinocopathological features KW - regional differences KW - Turkey KW - Bulgaria N2 - Background: 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 CR - 1. Kirdak T, Duh QY, Kebebew E, Clark OH. Do patients undergoing parathyroidectomy for primary hyperparathyroidism in San Francisco, CA, and Bursa, Turkey, differ? Am J Surg 2009;198:188-92. CR - 2. O’Neal P, Mowschenson P, Connolly J, Hasselgren PO. Large parathyroid tumors have an increased risk of atypia and carcinoma. Am J Surg 2011;202:146-50. CR - 3. Bae JH, Choi HJ, Lee Y, Moon MK, Park YJ, Shin CS, et al. Preoperative predictive factors for parathyroid carcinoma in patients with primary hyperparathyroidism. J Korean Med Sci 2012;27:890-5. CR - 4. Chang YJ, Mittal V, Remine S, Manyam H, Sabir M, Richardson T, et al. Correlation between clinical and histological findings in parathyroid tumors suspicious for carcinoma. Am Surg 2006;72;419-26. UR - https://dergipark.org.tr/tr/pub/bmj/issue//502227 L1 - https://dergipark.org.tr/tr/download/article-file/606192 ER -