AJR. American journal of roentgenology
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Nonlymphomatous lymphoid disorders of the lung consist of several entities with varied histology and clinical behavior. On the basis of histologic appearance, six lesions can be identified. ⋯ Although a radiographic diagnosis may be suggested, overlapping features mandate open-lung biopsy in most instances. The frequent evolution toward malignant lymphoma with lymphomatoid granulomatosis and pseudolymphoma necessitates close follow-up and sometimes aggressive therapy.