99mTc-MIBI imaging of AIDS-related Kaposi's sarcoma in the lungs

Imaging of Kaposi sarcoma

Kaposi sarcoma (KS) is a form of cancer that primarily appears on the skin but can potentially involve internal organs. There are several types of KS. The purpose of this article is to discuss the manifestations of KS and their appearance on imaging, the differential diagnoses associated with these findings, and molecular markers associated with KS that can aid appropriate diagnosis and therapy.

Serendipitous discovery of non-sestamibi-avid squamous cell lung cancer invading the heart during myocardial perfusion imaging

Scintigraphic and radiographic correlation of a non-sestamibi-avid lung mass invading the left ventricle serendipitously discovered during adenosine myocardial perfusion imaging is presented. The only clue to the presence of the mass was deformation of the anterior wall on SPECT myocardial perfusion imaging. This case serves as a reminder that although the appearance of pathology on a nuclear medicine imaging study is typically what is seen (specifically, increased radiopharmaceutical uptake), it can just as importantly be what is not seen.