conclusions carcinomas were the most common malignant tumors of head and neck observed in this age group. also, oral cancers in children and adolescents constitute a small percentage of the lesions that were studied objectives we aimed to determine the frequency of head and neck cancers in a population of iranian children and adolescents. patients and methods the records of patients ≤ 19 years ...

lymphomas are solid malignant tumors having a wide spectrum of clinical and pathological features. non-hodgkin’s lymphoma (nhl) is a subtype of lymphoma with two-thirds of the cases presenting as lymph node enlargement. the remaining one third of nhl cases has been reported in the extranodal sites, including the gastro intestinal tract, waldeyer’s ring, bone, skin, and brain. intraoral non-hodg...

Although malignant lymphoma of the breast is a rare disease, we recently experienced a high incidence of central nervous system (CNS) involvement. Thus, we retrospectively reviewed clinical records of 921 patients with breast tumors, treated from 1990 to 2002, to examine CNS involvement. Eight patients were found to have malignant lymphomas during this period. Of these, four patients ranging fr...

Involvement of the ovary by malignant lymphoma is well known as a late manifestation of disseminated disease. However, primary ovarian lymphoma (POL) is rare, accounting for 0.5 % of all non-Hodgkin’s lymphoma and 1.5 % of all ovarian neoplasms [1]. We present a case of ovarian non-Hodgkin’s lymphoma, manifesting like an advanced ovarian cancer, which was managed by surgery and chemotherapy (Fi...