[Diagnosis and management of patients with pheochromocytoma/paraganglioma: Consensus of experts of the Russian Medical Society for Arterial Hypertension and the Multidisciplinary Group for the Diagnosis and Treatment of Neuroendocrine Tumors].

The understanding of the nature of catecholamine-secreting tumors has changed significantly in recent years, affecting terminology and classification. Phaeochromocytoma/paraganglioma (PCC/PG) is a rare neuroendocrine tumor from chromaffin tissue that produces and secretes catecholamines. The incidence of PCC/PG is relatively low, with 2-8 cases per 1 million population per year; among patients with arterial hypertension, their prevalence is 0.

[Neurofibromatosis type 1 associated with pheochromocytoma: a case report with a brief review of the literature].

We presented the clinical case of neurofibromatosis type 1 (NF-1) associated with pheochromocytoma (PHEO) in a man under 40 years old without family history. The diagnosis of NF-1 was established based on 4 signs of the disease (multiple café au lait macules, scoliotic changes in posture, the presence of multiple neurofibromas, Lisch nodules). The diagnosis of PHEO was determined by a significant increase of free metanephrin/normethanephrin levels in daily urine, a malignant CT phenotype of the right adrenal tumor, and confirmed by pathomorphological study.

Incoherent optical fluctuation flowmetry for detecting limbs with hemodynamically significant stenoses in patients with type 2 diabetes.

Introduction: The development of new highly accurate, inexpensive and accessible methods for the detection of lower-extremity peripheral artery disease (LE-PAD) in diabetic patients is required. The aim of this study was to evaluate the accuracy of a new incoherent optical fluctuation flowmetry (IOFF) method in detecting legs with hemodynamically significant stenoses compared to ankle brachial index (ABI) and transcutaneous oximetry (TcPO2) in patients with diabetes mellitus (DM).

Materials And Methods: Patients were recruited into 2 groups.

Incoherent Optical Fluctuation Flowmetry: A New Method for the Assessment of Foot Perfusion in Patients with Diabetes-Related Lower-Extremity Complications.

(1) Background: To date, there are no studies evaluating the ability of the incoherent optical fluctuation flowmetry (IOFF) method to assess foot tissue perfusion. The aim of this study was to evaluate the correlation between perfusion values measured by IOFF and TcPO2 in patients with diabetes-related lower-extremity complications. (2) Methods: This was an observational, cross-sectional, two-center study.

[Solid pseudopapillary tumors of the pancreas: clinical and morphological characteristics, specific features of their immunophenotype, and diagnostic problems].

Objective: To analyze 60 cases of solid pseudopapillary tumors (SPTs) of the pancreas, to reveal their most characteristic clinical and morphological features, and to study their possible histogenesis.

Material And Methods: Sixty cases of SPTs of the pancreas underwent clinical, morphological, and immunohistochemical (IHC) examinations; a comparison group consisted of 86 pancreatic tumors of other histogenesis.

Results: It has been shown for the first time that SPTs are characterized by the nuclear expression of claudin 3 and the cytoplasmic expression of claudin 7.

[Challenges and opportunities for endoscopic ultrasound in the preoperative diagnosis of topical insulin the pancreas].

Insulinoma in most cases is monohormonal orthoendocrine tumor. This fact limits its searching area by a pancreas. However the insulinoma's clinical picture can be caused by other pathology.

Clinical and biochemical aspects of the carcinoid syndrome in neuroendocrine tumors of the abdominal and retroperitoneal organs and its impact for the disease prognosis.

Overall and relapse-free survival of 238 patients with neuroendocrine tumors of the abdominal and retroperitoneal organs was evaluated with consideration for the presence of the carcinoid syndrome. The incidence of the carcinoid syndrome was 15.6%.

Cancer and soluble FAS.

A test system developed by the authors was used to measure serum concentrations of soluble Fas in patients with malignant and benign tumors of different location and morphology. Relationships between soluble Fas levels and the main clinical and morphological characteristics of cancer were evaluated. It is proven that the concentrations and incidence of detection of soluble Fas in the sera of patients with tumors are significantly higher than in normal subjects.

Serum angiogenic factors in patients with neuroendocrine tumors of abdominal organs.

The initial (before treatment) levels of VEGF, endostatin, and tumor necrosis factor-beta (TNF-beta) were measured in the sera of 20 patients with malignant and benign neuroendocrine tumors of the abdominal organs and 25 healthy controls. The initial levels of VEGF, endostatin, and TNF-beta in the total group of patients with neuroendocrine tumors of abdominal organs did not differ from the control. A significant difference was detected between the mean serum concentrations of endostatin in patients with benign and malignant neuroendocrine tumors: 64.

[Adrenal gland surgery].

The authors of the article analyze more than 30-year experience of surgical treatment of adrenal gland diseases, offering a detailed description of clinical and morphological features of the main nosological forms such as Itsenko-Cushing disease and syndrome, primary hyperaldosteronism, pheochromocytoma, incidentaloma, and malignant adrenal tumors. The paper contains basic diagnostic criteria, indications to operative treatment, and extents of surgery for each of the diseases considered, as well as comparative analysis of peculiarities of conventional ("open"), and endoscopic adrenal gland surgeries. The article demonstrates significance of various immunohistochemical markers in differentiation between malignant and benign adrenal tumors.

Vascular endothelium growth factor in the sera of patients with adrenal tumors.

Serum levels of vascular endothelium growth factor were measured in 43 patients with adrenal tumors and 25 healthy subjects. The mean blood levels of the factor in patients with adrenal tumors significantly surpassed the control. No correlations between the level of vascular endothelium growth factor, patients age and sex were detected.

Serum interleukin-6 in patients with adrenal tumors.

The mean blood content of interleukin-6 in patients with adrenal tumors was much higher than in healthy donors. No correlations were revealed between interleukin-6 level, patients sex and age, stage and duration of the disease. Interleukin-6 concentration was maximum in patients with adrenocortical cancer.

Plasma content of soluble fas antigen in patients with adrenal tumors and tumor-like pathologies.

We compared plasma content of soluble Fas antigen (sFas) in 59 patients with tumors and tumor-like pathologies of the adrenal cortex and medulla and 60 healthy donors (control). The incidence and content of sFas in the plasma from patients with adrenal tumors was significantly higher than in healthy donors. A direct correlation was found between sFas content and patient's age.

Soluble Fas antigen (sFAS) in the serum from patients with adrenal tumors.

Serum content of soluble Fas antigen was measured by enzyme immunoassay in 60 healthy donors, 31 patients with adrenal tumors, and 16 patients with diffuse-and-nodular hyperplasia of the adrenal cortex accompanying primary aldosteronism and Cushing's disease. sFas was more often detected in the serum from patients with tumors of the adrenal cortex and medulla and diffuse-and-nodular hyperplasia of the adrenal cortex and its content varied in a wider range in patients compared to healthy donors. No correlations were found between the incidence of sFas, its content, sex, and age of healthy donors and patients.

Soluble Fas antigen in the serum of patients with colon cancer.

Serum concentration of soluble Fas antigen (sFas) was measured in 60 normal subjects and 33 patients with colon cancer. The incidence of sFas detection and its serum content were higher in patients with colon cancer compared to normal subjects. No relationships between the incidence and level of sFas and patient's sex, age, duration and stage of the disease were found.