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Primary hyperparathyroidism (PH) is one of the most common diseases of the endocrine system that requires surgical treatment. The most common cause of PH is parathyroid adenoma, which occurs in 8590% of cases, in 510% multiple adenomas or hyperplasia of several or all parathyroid glands. Surgical treatment is the only radical and effective method of treating PH, however, the variability of the anatomy of the parathyroid glands, the possibility of their ectopic location, as well as the close connection with the thyroid gland, in some cases, complicate the intraoperative verification of the parathyroid adenoma. All this can lead to inadequate volumes with parathyroidectomy. In this article, the presented clinical case demonstrates how the complexity of intraoperative verification of the parathyroid glands during parathyroidectomy led to intra-abdominal life-threatening complications acute duodenal ulcer with subsequent perforation and acute cholecystitis against the background of persistent hypercalcemia and perioperative stress. Also, on the example of this case, surgical tactics are demonstrated, taking into account the pathogenesis of abdominal complications.

Background: Primary hyperparathyroidism (PHPT) is a disease characterized by autonomous production of parathyroid hormone (PTH) from one or more parathyroid glands. Over the past 50 years asymptomatic form of the disease have become more prevalent in developed countries. Aims: To evaluate the clinical forms of PHPT presented in recent years and to specify the clinical and laboratory features in patients with symptomatic and asymptomatic forms of the disease. Materials and methods: We reviewed medical records of 449 patients admitted to three Medical Centers (Saint-Petersburg, Russia) between 20112018. Anamnesis, anthropometric data, laboratory (PTH, serum total calcium and ionized calcium, phosphorus, alkaline phosphatase, 24-h calciuria level, 25(OH)D) and instrumental (ultrasonography, scintigraphy, CT/MRI scan, DXA) tests were analyzed. Results: Patients average age was 59 years, with 93.1% women, and an F:M ratio of 13.5:1. Symptomatic form ofPHPT was identified in 310 patients (69%), while 139 were asymptomatic. 4.2% of patients had PHPT as part ofMEN syndrome. Almost half of the male population had urolithiasis and 45% of women had osteoporosis. Cardiovascular diseases were present in 64.4% of cases. 25(OH)D level was determined only in 20% of cases and was higher in asymptomatic patients (32.2 18.6 ng/ml, p = 0.003). Normocalcemic form of PHPT was diagnosed in37 patients (8.2%) and was characterized not only by normocalcemia and lower PHT level, but also by smaller adenoma size (p = 0.01) and hypocalcemic syndrome after surgery. Conclusions: Study results showed that symptomatic PHPT is more prevalent in the Russian population, that there are gender distinctions affecting the clinical presentation, and that the frequency of cardiovascular disease is high in this patient population. PHPT as part of MEN syndrome was detected in 4.2% of cases and required molecular genetic testing. Normocalcemic form of PHPT with postoperative hypocalcemia was present in every fourth patient. Rare determination of 25(OH)D level imposes the need of mandatory assessment of vitamin D supplementation and the reduction of its deficiency as part of the preoperative preparation of PHPT patients.

Backgraund. Papillary thyroid cancer (PTC) has a favorable course and low mortality rates. However, the incidence of morbidity and mortality continues to increase, especially in the high-risk group. BRAF mutation is a marker of the PTC aggressive course. Aims. Тo study the relationship between surgical treatment tactics and the BRAF positive PTC prognosis. Materials and methods. Our prospective study included 80 patients with BRAF positive PTC, operated from 2009 to 2016 y. Surgical tactics were determined by existing clinical guidelines. To the patients with BRAF positive thyroid cancer it is proposed to perform thyroidectomy with central compartment lymph node dissection. BRAF status was determined by the PCR method in fine needle aspiration biopsy material (FNAB). Results. Recurrence was detected in 7 of the 18 patients of the hemi/thyroidectomy group. Among 62 patients from the group of thyroidectomy with central compartment lymph node dissection recurrence was detected only in 3 cases. The mean recurrence time also differed significantly, and in the group of patients with (hemi)thyroidectomy without central compartment lymph node dissection is detected earlier (53 months and 59.61 months). Also, organ-preserving operations without central compartment lymph node dissection in BRAF positive tumor has worse result, regardless of T stage. Conclusions. In the presence of BRAF-positive PTC thyroidectomy with central compartment lymph node dissection is indicated.