[Clinicomorphological aspects of adrenal pheochromocytoma diagnostics].

The removed pheochromocytomas of 25 patients aged from 25 to 72 years have been studied. Among them 5 tumors have had bilateral character, 8 pheochromocytomas have been diagnosed as malignant, 4 patients have had metastases. The average size of benign pheochromocytomas has been 4.

[The Saint Petersburg Society of Pathologists is 100 years old].

The paper describes the history of the Saint Petersburg Society of pathologists since it was founded in 1909. It shows what great role is played by outstanding Russian medical scientists who have established their own schools of pathomorphologists and are respected in our and foreign countries. The activities of the society's members in research developments in cardiovascular and infectious diseases, cancer morphology, etc.

[Impact of the environmental factors on the incidence of thyroid diseases in the population of the Nizhniĭ Novgorod region].

None of the thyroid diseases is associated with the environment, as thyroid pathology since its structure and function depend on dietary intake of iodine and other trace elements. Iodine deficiency is not the only factor of development of endemic goiter as many authors show the high prevalence of the disease with sufficient dietary intake of iodine. Human thyroid disease may be considered to be a marker of environmental ill-being; therefore, while studying and untangling the mechanisms of development of goiter, thyroiditis, and thyroid tumors, one should keep in mind the environmental factors that have an evident influence on the development of thyroid diseases.