Bronchogenic Cyst in the Liver Mimicking Metastasis of Colorectal Carcinoma: A Case Report and Review

Abstract

Introduction Colorectal adenocarcinomaColorectal carcinoma is the third most common malignant disease worldwide [1]. Based on the primary depth of tumor invasion, the occurence of loco-regional lymphnode metastases and of distant tumor metastases colorectal adenocarcinomas can be graduated according to TNM-or Union internationale contre le cancer (UICC-) classification system. The five-year-survival rate decreases with higher tumor classification ( Table 1).The liver is the most common site for metastatic spread. In approximately 25% of the cases metastases can be found synchronously [1], in nearly 50% liver metastases appear metachronously after primary tumor resection [4]. Despite pulmonary and hepatic spreading a radical surgical resection of the hepatic metastases can be performed in a curative manner in 10-25% of the patients [5]. Surgical treatment of liver metastases of colorectal carcinomas is complex and should be *Corresponding author: Martin Reichert, MD, Department of General and Thoracic Surgery, University Hospital of Giessen, Justus-Liebig-University, Giessen, Germany, Rudolf-Buchheim-Street 7, 35392 Giessen, Germany, E-mail: martin.reichert@chiru.med.uni-giessen.de AbstractIntroduction: Carcinomas of the colon and rectum are the third most common cancer entity in the world and bear a high risk of synchronous (25%) or metachronous (50%) hepatic tumor seeding. For therapeutic decisions the differential diagnosis between benign and malignant hepatic lesions in the computer tomography scan is of major importance. We herein discuss congenital hepatic cysts derived from the primitive foregut as potential differential diagnosis for hepatic metastases from a colorectal primary tumor.

Pictorial Review of False-Positive Results on Radioiodine Scintigrams of Patients with Differentiated Thyroid Cancer

“…The findings at imaging and clinical follow-up have remained stable for at least 9 months in these two patients, which favors a benign diagnosis. We postulate that these findings may be due to the presence of an inflamed hepatic cyst or unusual foregut cyst (67,68). Another case of presumed benign radioiodine uptake occurred in a patient with a low-risk papillary thyroid cancer and a relatively low serum thyroglobulin level after thyroidectomy who had focal radioiodine uptake in the posterior lamina of the T9 vertebra on posttherapy images, without a CT correlate.…”