[Cholesterol crystal embolism].

Cholesterol crystal embolism (CCE) is an infrequent entity that primarily appears in males over the age of 60 with generalized arteriosclerosis after angiographic procedures, vascular surgery or, more rarely, with oral anticoagulant treatment with heparin or with fibrinolytics. We present the case of a patient with several risk factors for CCE, who presented with the pathognomonic triad of leg and foot pain, livedo reticularis and palpable pedal pulses. The diagnosis was based on the fact that cholesterol crystals were seen in the arterioles in the skin biopsy.

[Stevens-Johnson syndrome/toxic epidermal necrolysis treated with intravenous immunoglobulins].

Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are part of the same disease spectrum, but are differentiated by the degree of skin detachment. In TEN, more than 30 % of the body's surface area is affected; thus, it is a serious process, whose frequency is estimated at 1.2-6 cases per million population/year.

[Eccrine squamous syringometaplasia from chemotherapy extravasation].

Eccrine squamous syringometaplasia is a rare entity that occurs in patients who have received chemotherapy treatment. It also occurs in association with chronic ulcers, skin tumors, and after the ingestion of drugs, exposure to toxic agents and inflammatory processes. We present the case of a 47-year-old male diagnosed with microcytic lung carcinoma and superior vena cava syndrome.