Gray zone lymphoma

Overview

Type of disease: Rare conditions

Gray zone lymphoma is a cancer of the immune system.  The name of this lymphoma refers to the fact that cancer cells in this condition are in a "gray zone" (an uncertain category) because they appear similar to that of two other types of lymphoma, classical Hodgkin lymphoma and mediastinal large B-cell lymphoma.  Because features of gray zone lymphoma overlap with these two other types of lymphoma, diagnosing this condition can be difficult.  Gray zone lymphoma is most often diagnosed in young adults when an unusual lump (mass) is found in the chest in the space between the lungs (mediastinum).  This condition affects men and women equally. Source: Genetic and Rare Diseases Information Center (GARD), supported by ORDR-NCATS and NHGRI.

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