The isolated extranodal relapse of the isolated extranodal non- Hodgkin lymphoma: A case report.

Diffuse large lymphomas of B-cell origin (DLBCL) comprise approximately one-third of all non-Hodgkin lymphomas (NHLs) and extranodal involvement is detected in 50% of these cases at initial diagnosis. Primary malignant lymphoma of the adrenal gland is extremely rare. Here we report a 64-year-old male patient with nasopharyngeal lymphoma who had been in remission for 2 years. An adrenal mass was detected on a control abdominal computed tomography (CT) at one of his follow-up visits. The biopsy showed DLBCL. Since the tumor was solitary without any other nodal involvement, a new/de novo primary tumor was considered. Metachronous NHLs develop between 3 months and 15 years after a primary NHLs and VDJ (variable, diversity, joining) rearrangement gene analysis of the tumor tissue is recommended to discriminate recurrence from a metachronous NHLs. VDJ rearrangement gene analysis was consistent with the recurrence of the original neoplasm.