B-Cell Lymphoma Presenting with Extensive Cutaneous Involvement.

Cutaneous lymphomas tend to be of T-cell origin, less commonly of B-cell origin. We report a 68-year-old male patient suffering from extensive cutaneous nodules which were found to be B-cell large cell lymphoma in nature. Our case is a good example to unexpected cutaneous involvement of diffuse large cell lymphomas. It may be debated whether it is a primary cutaneous lymphoma or cutaneous involvement of a systemic lymphoma. The case differs from other primary cutaneous lymphomas in the clinical course and in the pathologic and immunohistochemical features. Systemic B-cell lymphomas may also involve the skin. We think that our case demands attention because systemic B-cell lymphomas with such a great skin involvement is not reported in the literature before.