1. Non-Hodgkin's lymphoma  (Trust Mark: Doctor-Reviewed)
Non-Hodgkin's lymphoma is cancer of the lymphoid tissue, which includes the lymph nodes, spleen, and other organs of the immune system.Lymphoma- non-Hodgkin's; Lymphocytic lymphoma; Histiocytic lymphoma; Lymphoblastic lymphoma; Cancer- non-Hodgkin...• Reviewer: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; Yi-Bin Chen, MD, Leukemia/Bone Marrow Transplant Program, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

2. Medical Tests  (Trust Mark: Doctor-Reviewed)
Some tests, such as an ear canal check or assessment of the heart and lung function using a stethoscope, are simple and non-invasive. Others, such asχ rays and ultrasound tests, require a visit.to a special laboratory, and may or may not carr...