Vascular neoplasm is the most common primary neoplasm of the spleen.1 Of the various vascular tumors of the spleen, splenic hamartoma and littoral cell angioma occur only in the spleen.2 Since the first report in 1861 by Rokitansky,3 splenic hamartomas have also been called splenomas, spleen within a spleen, hemangiomas, posttraumatic scars, fibrotic nodules, tumorlike congenital malformations ...

Malignant lymphoma of follicular center origin is one of the most common types of non-Hodgkin lymphoma (NHL). It accounts for approximately 20% to 30% of NHL in adults, occurring predominantly in middle and older age groups.1 However, it is extremely rare in the pediatric population, the most common pediatric NHLs being lymphoblastic lymphoma, diffuse large B-cell lymphoma, anaplastic large ...

Myocarditis is defined as a nonischemic inflammatory process of the myocardium that results in injury to the cardiac myocytes. Although infections, particularly with viruses, are one of the more common etiologies of lymphocytic myocarditis, most cases of giant cell myocarditis (GCM) are idiopathic or autoimmune in origin. Drugrelated hypersensitivity and other toxic myocarditides that involve giant cells are generally microgranulomatous ...

The diagnosis of intestinal T-cell lymphoma poses a diagnostic dilemma. Intraepithelial T-cell infiltration is a normal immune phenomenon. An increase in intraepithelial lymphocytes accompanied by villous atrophy and crypt hyperplasia may represent celiac disease or may represent lymphoma.1,2 In addition, T-cell lymphoma is frequently associated with celiac disease and may also show infiltration by nonneoplastic inflammatory cells, adding ...