Introduction:The study of the possibilities of perfusion computed tomography (PCT) in determining the nature of focal lung formations in the absence of morphological verification, doubtfulness of the data of native CT — the actual problem of thoracic radiology.The aim of the studywas to Refine the methodology and capabilities of PCT in determining the nature of formations of the lungs.Material and methods of research:The data of PCT of 29 patients with benign and malignant changes in the lungs on 128 slice computed tomography with data processing at the workstation were analyzed.Conclusion:Low-dose scanning Protocol for lung PCT allows to obtain reliable data on the angiogenesis of focal lung formations. Upon receipt of the perfusion map, the ROI is placed on the area of the highest blood flow. With sufficient PCT data on the nature and prevalence of lung disease from CT with contrast enhancement may refuse. Average PS, TTP are the main and leading factors in determining the nature of the lesion in the lungs. Qualitative and quantitative analysis of PCT data allows to speak reliably about the nature of foci in the lungs.
Background. Diagnostic imaging of retroperitoneal neoplasms that arise within the retroperitoneal space but outside the major organs in this space is challenging due to the presence of large spaces filled with fatty tissue that allows the tumor to develop asymptomatically for a long time. In addition, these tumors are rare, and radiological semiotics and clinical manifestations can be nonspecific.Case presentation. We present the rare clinical case of a 53-year-old patient with a large retroperitoneal mass detected by contrast-enhanced computed tomography. Additional imaging diagnostic procedures as well as histological findings helped to make a definitive diagnosis: extraorganic retroperitoneal leiomyosarcoma arising from the muscular wall of the splenic vein.Conclusion. The retrospective analysis of CT data showed that the tumor-induced marginal defect in the contrasted splenic vein may indicate the tumor arising from the muscular wall of the vessel. The final diagnosis was made on the basis of a morphological study.
The paper describes a clinical case of pancreaticoduodenectomy for pancreatic ductal adenocarcinoma with superior mesenteric vein resection without its reconstruction. This is the first case study of the kind found in Russian-language literature. In total, 16 such clinical observations have been described in the relevant world literature to date. A 74-year-old female patient was diagnosed with ductal adenocarcinoma of the pancreatic head 1.1 × 1.1 cm in size adjacent to the superior mesenteric vein. After four courses of ineffective neoadjuvant therapy, the tumor completely obliterated the superior mesenteric vein. The control multislice spiral computed tomography (MSCT) showed that the tumor was complete with the formation of a distinct collateral between the superior mesenteric and the inferior mesenteric veins. The patient underwent pancreatoduodenal resection with resection of the involved vein segment without vascular reconstruction. The histopathological diagnosis was pT1cN1M0R0. The patient was discharged on the next day after the operation.
Adrenocortical cancer (ACC) – a neoplasm of the adrenal cortex, which is rare, in 0.02–0.06% of cases. It is characterized by various clinical manifestations in the form of hypercorticism of varying severity and unfavorable prognosis. Typically, a tumor in the form of a node, often with signs of infiltration growth. Some tumors are formed by light and dark cells, there is often significant cellular polymorphism. Malignant tumors of the adrenal cortex have a pronounced tendency to hematogenous metastasis, usually in the lungs, bones and other organs. The article presents a rare clinical case of metastatic lung injury, identified 22 years after the removal of the adrenal malignant tumor (AKP).
аннотация введение. Современный уровень развития диагностических технологий позволяет проводить измерения большого количества параметров кровотока патологических процессов с помощью лучевых методов исследования. Одной из таких методик является перфузионная компьютерная томография (ПКТ), отработка протоколов выполнения и анализ полученных данных при различных патологиях легких-актуальная задача торакальной радиологии. Целью исследования явился анализ достоверности показателей КТ-перфузии в определении природы очаговых образований легких данными статистического анализа. Материал и методы. Проанализированы данные ПКТ 60 пациентов с доброкачественными и злокачественными изменениями в легких на 128-срезовом компьютерном томографе. выводы. Средние показатели pS, ttp являются основными и ведущими факторами определения природы очага в легких. Комплексный анализ данных МСКТ с КТ-перфузией позволяет достоверно высказаться о природе очагов в легких. Даны практические рекомендации при проведении перфузионных КТ-исследований легких. ключевые слова: статистический анализ, перфузионная компьютерная томография, легкие, очаговое образование. perfusion Computed tomographY in determining the nature of foCaL puLmonarY Lesions: CLiniCaL and statistiC anaLYsis n.i.
A clinical observation of the diagnosis of cerebral venous stroke, rare in clinical practice, based on the data of magnetic resonance imaging and computed tomography of the brain, is presented, the semiotics of the revealed changes is described.
Федеральное государственное бюджетное учреждение «Российский научный центр рентгенорадиологии» Министерства здравоохранения Российской Федерации: 117997, Москва, ул. Профсоюзная, 86 Информация об авторах Котляров Петр Михайлович-д. м. н., профессор, заведующий научно-исследовательским отделом новых технологий и семиотики лучевой диагностики заболеваний органов и систем Федерального государственного бюджетного учреждения «Российский научный центр рентгенорадиологии» Министерства здравоохранения Российской Федерации; тел.:
Информация об авторах Котляров Петр Михайлович-д. м. н., профессор, заведующий научно-исследовательским отделом новых технологий и семиотики лучевой диагностики заболеваний органов и систем Федерального государственного бюджетного учреждения «Российский научный центр рентгенорадиологии» Министерства здравоохранения Российской Федерации; тел.:
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.