Report on a case of cutaneous lymphoma presenting as inflamed cyst

Cutaneous cysts are frequently observed in medical practice. They are commonly of sebaceous origin and can be easily treated. However, at times their appearance is fallacious because they hide more serious illnesses. This case, in fact, deals with an inflamed “sebaceous cyst” of the axilla that was removed due to its resistance to medical treatment. Histology showed the presence of a T-cell lymphoma. The patient underwent a complete check-up that fortunately ruled out dissemination. He will now undergo regular haematologic follow-up in order to observe the evolution of the lymphoma.