Malignant tumors of the thyroid gland account for about 1% of thenewly diagnosed malignant tumors each year, and their incidence inwomen is twice the incidence in men. According to the WHO classification (2004) thyroid tumors are divided into: carcinoma of the thyroid,adenoma and similar tumors, and other thyroid tumors whichinclude: teratomas, angiosarcomas, paragangliomas and others, as wellas primary lymphomas and plasmacytomas. Primary thyroid lymphomasare defi ned as lymphomas which originate in the thyroid gland.Th is study presents the case of a 68-year-old patient with a thyroidlymphoma, which caused compression of the airways. In the patientpresented there was reduced activity of the thyroid gland. Th e dominantsymptoms were: breathing diffi culties, hoarse voice and the enlargementof the thyroid. An ultrasound examination was performedbefore surgery on the neck, which showed a multinodular thyroid,with compromised and compressed trachea to the right and rear. Anemergency surgical procedure was performed to reduce the tumor.Pathohistological diagnosis confi rmed diff use large B cell lymphoma.Th e aim of the study was to present a patient with a thyroid lymphoma,who had previously not had any immunological changes to the gland,that is, she had not had any chronic lymphocyte thyroiditis, but due tothe compressive syndrome it was necessary to perform an emergencysurgical procedure to reduce the tumor.

Background: The most comon patohistologi-cal finding in primary hyperparathyroidism is adenoma of the parathyroid gland, followed by hyperplasia and the rarest is carcinoma. However, hyperplasia of the parathyroid glands (PTG) is most commonly found in secondary and tertiary hyperparathyroidism. Objective: To determine the relationship between the localization of the parathyroid glands and pathological diagnosis, as well as the prevalence of individual pathological diagnosis after surgery in patients with hyperparathyroidism. Methods: Analysis of retrospective-prospective database of 79 patiens who underwent parathyreoid-ectomy for hyperparathyroidism in the 7-year study period. Diagnostic methods were used to identify enlarged parathyroid glands as well as to determine their localization: ultrasound examination, scintigraphy and operative finding. Standard hematoxylin eosin staining was used for pathohistological diagnosis. A correlation analysis between parathyroid gland localization and pathohistological diagnosis was performed. Results: The median age of the patients were 51 age (range 20-73) and 67,1% of the patients were female. In the total number of surgically removed parathyroid glands (182), the most common pathohistological diagnosis was hyperplasia. Parathyroid adenoma was found in 21 cases. Other diagnoses (thyroid nodule / tissue, lymph node, thymus, cancer) were found in 11 cases, while a normal finding was found in 12 glands. Pathohistological diagnosis of hyperplasia and adenoma were more common in the lower parathyroid glands. Using the chisquare test, no association was found between pathohistological diagnosis and localization of enlarged parathyroid glands. Conclusion: The most common pathohistological diagnosis in hyperparathyroidism was hyperplasia and was most commonly found in the inferior parathyroid glands. Adenoma as pathohistological diagnosis is also most commonly found in the lower parathyroid glands, but without statistical significance.