Malignant transformation of a spiradenoma with blaschkoïd pattern.

Eccrine spiradenoma is a benign and rare adnexal tumor originating from cutaneous eccrine sweat glands. It usually presents as a solitary lesion. It can have different presentations, including a blaschkoid arrangement which is rare.

[Ecthyma gangrenosum].

Ecthyma gangrenosum (EG) is a severe potentially lethal cutaneous infection that progresses sequentially from maculopapular rash to haemorrhagic bulla and then to necrotic ulceration with surrounding erythema. It usually occurs in immunocompromised patients (aplasia secondary to chemotherapy, HIV infection, neutropenia or functional deficit of neutrophils, agammaglobulinemia). It rarely affects healthy people.

[A pink nodule on the face].

We report the case of a 32-year old female patient, with no notable medical history, requiring dermatology consultation for evaluation of a nodule on her right cheek which had evolved over the past 10 years. Clinical examination showed a reddish dermal-based nodule with a smooth surface. The lesion measured 1cm in diameter and was located at the level of the right cheek (A).

[Desquamative erythrodermia].

Paraneoplastic dermatoses are a spectrum of cutaneous manifestations which may precede, coincide with or follow the diagnosis of cancer. Our study aims to remind clinicians that desquamative erythrodermia is a form of paraneoplastic dermatosis which may occur during hematologic malignancies. Hence the importance of a complete assessment to identify a neoplastic process in the presence of these clinical signs and especially when they are suspect.