Malignant Lymphoproliferative Disorders Extending into the Orbit from the Paranasal Sinuses Peleg A et al. - Presenting symptoms of malignant orbital lymphoproliferative disorders extending from the paranasal sinuses include mass effect occasionally with infiltrative and inflammatory characteristics accompanied by symptoms of sinus disease. Treatment should be initiated promptly as local symptoms are frequently relieved and survival is possible, especially in cases of NHL. [more...]