Nasopharyngeal carcinoma (NPC), previously known as lymphoepithelioma, is a malignancy arising from the epithelium of the nasopharynx. Epidemiology Approximately one third of nasopharyngeal carcinomas of the undifferentiated type are diagnosed in adolescents or young adults. Although rare, NPC accounts for one third of childhood nasopharyngeal neoplasms (data from USA) Classification Etiopathogenesis NPC results from an…
Pericarditis is inflammation of the pericardium and can occur as an isolated entity or as a manifestation of an underlying systemic disease.
Acanthamoeba keratitis (AK) is a potentially sight-threatening ocular infection that causes a progressive ulcerative keratitis and often carries a poor prognosis due to significant delays in diagnosis.
Pain/discomfort arising from pain-sensitive structures in the head.