Portosystemic shunting in superior vena cava obstruction by tumor demonstrated on ventilation-perfusion lung scan.

نویسندگان

  • Seung Wook Ryu
  • Adrian Waugh
  • Kevin C Allman
چکیده

Extrapulmonary deposition of macroaggregated albumin particles on lung perfusion scintigraphy occurs in the presence of right-to-left shunting, as demonstrated in this case of portosystemic shunting related to superior vena cava obstruction by germ cell tumor of the mediastinum. The case demonstrates the importance of examining tracer deposition within the entire field of view on (99m)Tc-macroaggregated albumin perfusion lung scintigraphy for extrapulmonary findings.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Liver and vertebral visualization on lung perfusion scan.

A 45-yearold man with dyspnea was referred for lung perfusion scan. Extrapulmonary uptake of Tc-99m macroaggregated albumin (MAA) was noted in a small area of the liver and in the thoracic vertebrae (fig. 1); the findings were not seen in a repeated lung scan after administration of the tracer through a peripheral vein in the foot (fig. 2). Subsequent computed tomography of the thorax revealed ...

متن کامل

Mediastinal Neuroendocrine Carcinoma of Unknown Origin Presenting with Superior Vena Cava Syndrome (SVCS): A Case Report

Primary neuroendocrine carcinoma (NEC) of the mediastinum is a rare type of carcinoma. According to the literature, only five cases of this condition have been reported so far. In this paper, we present a rare case of mediastinal NEC of unknown primary site. The patient was a 34-year-old man with mediastinal NEC, who presented with chronic dry cough and a right-sided mediastinal mass one year p...

متن کامل

Superior Vena Cava Syndrome due to Thrombosis: A Rare Paraneoplastic Presentation of Bronchogenic Carcinoma

Superior vena cava (SVC) syndrome is not an uncommon occurrence in patients with malignancy and it is often described as a medical emergency. In majority of the cases, SVC syndrome occurs due to mechanical obstruction of the SVC by extraluminal compression with primary intrathoracic malignancies. However, intraluminal obstruction due to thrombosis can also produce symptoms and signs of SVC synd...

متن کامل

Local colloid trapping in the liver in the inferior vena cava syndrome.

Local radioactive areas in the liver were observed as a result of superficial cavoportal shunting of radiocolloids in two patients with the inferior vena cava syndrome. In one patient a paraumbilical and/or a recanalized umbilical vein was apparently involved in the hepatopetal shunting. In the other patient a superficial anastomosis other than the paraumbilical vein shunted colloid to the live...

متن کامل

Anterior mediastinal masses and anesthesia in children: how far have we come along?

Anesthetic management of anterior mediastinal masses (AMM) is challenging. We describe the successful anesthetic management of two patients with AMM in which dexmedetomidine was used at supra-sedative doses. Our first case was a 41-year-old man who presented with a 10 9 9 9 11 cm AMM, a pericardial effusion, compression of the right atrium, and superior vena cava syndrome. He had severe obstruc...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Journal of nuclear medicine technology

دوره 42 2  شماره 

صفحات  -

تاریخ انتشار 2014