Lymphoreticular disorders masquerading as rheumatic disease syndromes.

We describe four cases, each with a distinct rheumatologic presentation. Three had lymphoma, and the fourth, though initially suggestive of lymphoma, had a tuberculous infection. Clinicians should be alert for diseases masquerading as diverse clinical syndromes. It is important to establish rheumatic, lymphoproliferative, or infectious etiology because of major differences in therapeutic and prognostic implications.