The actual role of 18F-FDG PET/CT in evaluating primary brain lymphoma is still an open issue. Brain lymphoma usually show elevated 18F-FDG uptake, often higher than other brain tumors or inflammatory processes, but the metabolic behavior of this lymphoma is not still understood.
Lipoma, a common soft tissue tumor composed of mature adipose tissues, can occur in any part of the body with fat. Accounting for 8.4% of primary heart tumors , the lipoma in the heart is rare, and the most common sites are the right atrium, left ventricle, and pericardium [2,3]. Most patients with cardiac lipomas have no symptoms, and some may experience palpitations, syncope, or even cardiac arrest [4, 5].
1.1. Background: Tumors of the central nervous system consist of a heterogeneous group of neoplasms of great histological diversity. Despite the increasing prevalence of these tumors in developing countries, some places like Yemen do not have representative studies showing the true impact of these tumors on our population.
1.1. Background: Eccrine porocarcinoma is an extremely rare malignant skin tumor. Furthermore, because it has clinicopathologic characteristics similar to other skin adnexal tumors, it is often difficult for clinicians and pathologists to diagnose.