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Updated: Aug 17, 2026

Intralymphatic Immunotherapy and Vaccination in Mice
Published on: February 2, 2014
[Persistent inflammatory reaction at the injection site of Il-2 with lymphoma-like inflammatory infiltrates]
Interleukin-2 (Il-2) is widely used for treatment of carcinomas, leukemia, and melanoma. Adverse drug effects of Il-2 include various systemic and generalized cutaneous drug reactions. In the following we report on a persistent inflammatory reaction at the injection site of Il-2. A patient received chemoimmuno-therapy for treatment of metastasizing melanoma, including subcutaneous application of recombinant interleukin-2 (Proleukin((R))). Within a few days reddish nodules developed at the injection sites that persisted after cessation of Il-2 injections for two years until final lethal outcome. Histologic examination revealed a lobular panniculitis expressing atypical lymphocytes and multinucleated histiocytes.
Interleukin-2 (Il-2) is widely used for treatment of carcinomas, leukemia, and melanoma. Adverse drug effects of Il-2 include various systemic and generalized cutaneous drug reactions. In the following we report on a persistent inflammatory reaction at the injection site of Il-2. A patient received chemoimmuno-therapy for treatment of metastasizing melanoma, including subcutaneous application of recombinant interleukin-2 (Proleukin((R))). Within a few days reddish nodules developed at the injection sites that persisted after cessation of Il-2 injections for two years until final lethal outcome. Histologic examination revealed a lobular panniculitis expressing atypical lymphocytes and multinucleated histiocytes.
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