ABSTRACT
This chapter presents the case study of a 54-year-old woman. She had initially noticed the first few patches over her pelvic girdle, but slowly over the years the patches have become more widespread. The patches are occasionally mildly itchy; she has noticed a slight dryness over their surface. There is an extensive eruption of multiple erythematous patches with overlying scale over the trunk and limbs, occurring predominantly in unexposed areas. The patches are oval to annular in shape and most, but not all, are well demarcated. The diagnosis that shouldn’t be missed is mycosis fungoides, a form of cutaneous T-cell lymphoma (CTCL). CTCL has three skin stages: Patch stage, plaque stage and tumour stage. CTCL may remain confined to the skin for many years running an indolent course, but the abnormal cells can eventually infiltrate other tissues including blood, lymph nodes and visceral sites, usually in the context of extensive cutaneous involvement with widespread plaques, tumours or erythroderma.
