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01.03.2012 | Case Report | Ausgabe 2/2012

International Journal of Legal Medicine 2/2012

Demonstration of liver metastases on postmortem whole body CT angiography following inadvertent systemic venous infusion of the contrast medium

Zeitschrift:
International Journal of Legal Medicine > Ausgabe 2/2012
Autoren:
Chris O’Donnell, Jacqueline Hislop-Jambrich, Noel Woodford, Melissa Baker

Abstract

An 86-year-old woman was hospitalized for breathlessness and a large right-sided pleural effusion. Approximately 1 h after thoracentesis, she developed a hemothorax resulting in hypotension and death. Routine postmortem CT scanning showed a large volume right hemothorax and a markedly enlarged liver. In an attempt to determine the origin of bleeding prior to autopsy, a postmortem CT angiogram was performed. Following inadvertent cannulation of the left long saphenous vein and infusion of ∼1,700 mL of a polyethylene glycol 200 and iodine-based radiographic contrast solution into systemic veins using a mechanical pump, CT scanning revealed a dense hepatic "parenchogram" containing multiple large, filling defects indicative of metastases. These were confirmed at autopsy. Microscopic evaluation of the liver using hematoxylin and eosin staining showed marked histological artifact characterized by centrilobular sinusoidal expansion although histology of the adenocarcinoma metastases was typical and apparently unaffected by the contrast solution. Postmortem CT angiography using an aqueous radiographic contrast agent in the so-called venous phase seems to be useful for the identification of hepatic parenchymal metastatic disease although it does cause histological artifact.

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