The thesis has the following objectives: Describe the clinical and paraclinical characteristics of adnexal ocular lymphoid proliferations; reviews the results of treatment of adnexal ocular lymphoid proliferations. | Ocular Adnexal Lymphoid Proliferations is " epidemic outbreak " in Asian countries like Japan, Korea, Taiwan, the annual average incidence increased from to . In the US there are 45,000 new cases developing each year, the annual average incidence increased about . Over 1,269 autopsies of patients who died of lymphoma seen in Ocular Adnexal Lymphoid Proliferations. This rate in the patient group of non-Hodgkin's lymphoma with the remaining 5% extranodal lymphoma is 8%. Ocular Adnexal Lymphoma causes 10% orbital tumor in adults and of conjunctival neoplasm. The most recent hypothesis that lymphomas arise from a process of normal response of the lymphocytes with infection or inflammation or lymphogenesis factor mutant. There are two pathophysiological mechanisms have been demonstrated. A lymphoma is associated with chronic inflammation, infection, immunosuppression process or autoimmune disease. The secondary hypothesis is normal tissue develop into lymphoma as a chronic inflammatory response to H. pylori due in MALT lymphoma or u extranodal gastric gland lymphoma.