TIA1 and panniculitis: These authors described three subsets of clinico-pathological presentation: (i) classic panniculitis-like deep indurated plaques on the extremities; (ii) single or multiple lesions resembling pyoderma, cellulitis, hematoma, or an arthropod bite reaction at one anatomical site; and (iii) an MF-like presentation characterised by a less aggressive course and the presence of non-activated gamma-delta cells with minimal or absent TIA-1 and granzyme B expression.