A multilobulated asymptomatic umbilical nodule revealing endometriosis.

Primary umbilical endometriosis is unusual clinical presentation of endometriosis. Its diagnosis can be challenging due to lack of knowledge. This condition should be listed in the differential diagnosis of umbilical disorders.

Unilateral laterothoracic exanthema in an adult.

Unilateral laterothoracic exanthema (ULE) is a benign self-limited condition that spontaneously resolves in a few weeks. Occurring mostly in childhood, although few rare cases in adults have been also reported. Diagnosis of ULE is clinical, and laboratory investigations are not required.

Methotrexate-induced necrolysis in tumoral-stage mycosis fungoides: a challenging diagnosis.

Methotrexate-induced cutaneous ulceration is a rare but potentially serious drug adverse reaction. This adverse reaction of methotrexate therapy has been initially described in psoriasis patients and is unusual in patients with cutaneous T-cell lymphoma. In 1978, Mc Donald et al reported the first three cases of cutaneous ulcerations in patients treated for a mycosis fungoides with intravenous infusions of methotrexate. Since then, few cases of methotrexate-induced skin ulcers in patients with mycosis fungoides have been published. We report an additional patient with erythrodermic mycosis fungoides who developed cutaneous ulcerations as a sole manifestation of methotrexate toxicity.