reports which describe sick sinus syndrome due to malignant lymphoma have been rare and only eight cases have been reported until now. this is a case of sick sinus syndrome and superior vena cava syndrome secondary to invasion of occult malignant lymphoma of the lung in a 60 years old male. there were no symptoms or signs of malignancy before the first presentation with sick sinus syndrome. pat...

objective: oral non- hodgkin’s lymphoma (nhl) is a relatively rare neoplasm that may develop in the soft tissues or jaw bones, with or without node or marrow involvement. oral lymphomas are often difficult to diagnose as there are no characteristic clinical features and usually appear as non-tender swellings.   case: we describe clinical, radiographic, histopathological and immunohistochemical ...

Background: Lymphoma is a malignant proliferation of lymphoid cells. External T-cell lymphoma is very rare. Lymphomas are neoplastic growth of lymphocytes caused by organisms like EBV, HIV, etc. This malignancy is classified as Hodgkin’s lymphoma and non-Hodgkin’s lymphoma. Oral lymphomas account for a small percentage of head and neck malignancies, and intraoral lymphoma is rare and mostly see...

malignant lymphoma may occur in the oral cavity and oropharynx, but is most commonly located in waldeyer's ring, particularly in the palatine and lingual tonsil. the occurrence of malignant lymphoma in the tongue is very rare. clinical features are nonspecific ulcerative lesions that do not heal. in the literature, the majority of cases are non-hodgkin’s lymphoma, diffuse large b cell type; how...

156 Iranian patients with primary malignant tumors of the small intestine were reviewed. Malignant lymphoma was the most common tumor type, comprising 128 patients (82%), followed by adenocarcinoma (22 patients, 14.1 %), leiomyosarcoma (4 patients, 2.56%) and carcinoid tumor (2 patients, 1.28%). Lymphomas and adenocarcinomas were primarily located in the duodenum or jejunum, whereas leiomy...

langerhans cell histiocytosis (lch) is a rare neoplasm defined as the proliferation of bone marrow langerhans cells, which is a kind of dendritic cells. the major pathological features of lch are expression of cd1a and s100 as well as birbeck granules. its presentation can differ from a mild bone lesion to a multi-systemic evolved malignant neoplasm; however, the latter outcome is almost rare. ...

renal masses can be categorized as benign and malignant lesions. among the renal malignancies, renal cell carcinoma is the most common malignancy. however, other rare malignant lesions should be considered in differential diagnosis. primary renal lymphoma is quite rare and might be mistaken for renal cell carcinoma. due to lack of lymphatic tissue in the kidney, pathogenesis of renal lymphoma i...

this investigation was done in kennan from march 1989 to march 1993 to study the epidemiology of cancers in this province and to compare the results with a previous study performed in this area and some available statistics. a total number of 288 1 new cases of malignancy were registered and the crude relative frequency of cancers was studied. gastric cancer with a frequency of 9.7%, malignant ...

This investigation was done in Kennan from March 1989 to March 1993 to study the epidemiology of cancers in this province and to compare the results with a previous study performed in this area and some available statistics. A total number of 288 1 new cases of malignancy were registered and the crude relative frequency of cancers was studied. Gastric cancer with a frequency of 9.7%, malig...