Leptomeningeal carcinomatosis in gastric cancer: a case report of a rare yet aggressive entity.

Leptomeningeal carcinomatosis (LMC) is exceedingly rare in gastric cancer. It is most commonly seen in breast, lung cancer and melanoma, and is associated with an extremely poor prognosis. If untreated, median overall survival is four to six weeks.

Paraneoplastic dermatomyositis and prostate cancer: Myopathy regression under cancer-directed therapy.

Prostate cancer is the second most frequent malignancy in men worldwide and the fifth leading cause of death. Dermatomyositis (DM) is a rare idiopathic inflammatory myopathy characterized by musculocutaneous manifestations. However, DM can also present as a paraneoplastic syndrome of an underlying neoplasm.

Metastatic extramammary paget disease, a remarkable clinical case and a brief review of a rare disease.

Extramammary Paget Disease (EMPD) is an often-misdiagnosed rare disorder, whose cause remains unknown. Diagnosis is confirmed by skin biopsy. Primary treatment for EMPD is surgery.

Metastatic basal cell carcinoma: a frequent disease with rare clinical evolution.

Basal cell carcinoma (BCC) is the most common malignancy worldwide. BCC has a benign evaluation, despite the high rate of local recurrence. Conversely, metastatic BCC (mBCC) is extremely rare.