[Cutaneous follicular center B-cell lymphoma treated with intralesional rituximab].
ABSTRACT Cutaneous follicular center B-cell lymphomas are indolent tumors characterized by the presence of neoplastic follicular center cells. They contain a mixture of centrocytes with a variable number of centroblasts. The tumor is usually treated by surgery or radiotherapy, although other treatments may be used such as interferon-alpha, chemotherapy, and biological agents (rituximab). Rituximab is a chimeric monoclonal anti-CD20 antibody that can be administered intravenously or intralesionally. We report the case of a 41-year-old man who consulted for violaceous nodular lesions in the left scapular region and who was diagnosed with cutaneous follicular center B-cell lymphoma after biopsy, laboratory tests, thoracic-abdominal-pelvic computed tomography, abdominal ultrasound, and bone marrow biopsy. It was decided to treat him with 30 mg of intralesional rituximab administered for 1 week (3 times) every month for 4 months. Complete response was obtained. We also review the published cases of cutaneous B-cell lymphoma treated with intralesional rituximab.
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ABSTRACT: The differential diagnosis between primary cutaneous diffuse large B-cell lymphoma and cutaneous follicular lymphoma is one of the most difficult aspects of dermatopathology, even though morphological criteria are well established and a wide panel of antibodies is available to every laboratory. Such diagnosis is, however, not trivial because it has important prognostic and therapeutic implications. Nevertheless, when the literature is reviewed, there is a feeling that the diagnostic deficits from the past could perhaps be responsible for the differences observed in the therapeutic results with less aggressive treatments, such as rituximab. The current report briefly revises some cases of primary cutaneous diffuse large B-cell lymphoma treated with rituximab, which have been reported in the literature. It also presents an additional case emphasizing the current approach to the differential diagnosis.The American Journal of dermatopathology 12/2011; 33(8):819-26. DOI:10.1097/DAD.0b013e3181fe9746 · 1.43 Impact Factor
Piel 02/2012; DOI:10.1016/j.piel.2011.08.002
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ABSTRACT: The aim of this retrospective study was to assess the efficacy and tolerance of intravenous rituximab in multifocal primary cutaneous follicle centre lymphomas (PCFCL). Eleven patients with a multifocal PCFCL were treated with rituximab (MabThera(®)) administrated intravenously. After four infusions, an objective response was observed in 90% of patients, and one month after all the infusions (median of 6 infusions) all the patients had an objective response and complete remission was obtained in 7 of 11 patients (64%). Follow-up ranged from 9 to 65 months (median: 30 months). Local disease recurrence was observed in five patients. The median progression-free survival time after the end of treatment was 23.6 months. This study is the largest series of patients with multifocal primary PCFCL treated with intravenous rituximab. This therapy is a safe and effective treatment and could represent an excellent alternative treatment to radiotherapy.Acta Dermato-Venereologica 06/2011; 91(5):562-7. DOI:10.2340/00015555-1113 · 4.24 Impact Factor