This ALK-positive anaplastic large cell lymphoma (ALCL) case highlights the importance of considering ALCL in the setting of iatrogenic immunosuppression in hidradenitis suppurativa patients. Diagnosis of ALCL can be challenging in situations with very low viability/cellularity, negative CD3 and/or other T-cell markers, and immunosuppression.
Keywords: ALCL; ALK; KRAS; adalimumab; iatrogenic immunodeficiency‐associated.
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