Demyelinating pseudotumor is a rare inflammatory demyelinating disease of the central nervous system (CNS) that has a similar clinical presentation and computed tomography (CT) and magnetic resonance imaging (MRI) imaging findings as brain tumors or abscesses. Unlike brain tumors, demyelinating pseudotumors respond well to steroid hormones. There are only a few reported cases of intracranial de...

Spindle cell pseudotumors may occur due to mycobacterial infection in immunocompromised hosts, particularly those with acquired immunodeficiency syndrome (AIDS). Most of the reported mycobacterial spindle cell pseudotumors were found in the lymph nodes. We report a case of spindle cell pseudotumor in a 37-year-old man with AIDS who presented with a firm nodule over his right arm. Histologically...

Non-neoplastic inflammatory pseudotumors have been reported to arise at extraocular sites within the orbit" as well as in the posterior uveal tract."* Since their clinical appearance was indistinguishable from that of a malignant melanoma of the choroid, psuedotumors presenting as intraocular masses have been treated by enucleation and their true nature was not apparent until histologic examina...

Calcified fibrous pseudotumors can generally be detected as solitary masses in various regions of the body, and were first described in 1988. In this case report, we discuss an adult patient whose tumor was localized in the lung, which has not been reported in the literature before.