Early detection of lymph node metastases by 7.5 MHz-ultrasound examination in a patient with primary malignant melanoma of the lung

Malignant melanoma generally presents as a primary neoplasm of the skin. However, mucosal localizations, such as the oral cavity, esophagus, larynx or the anogenital mucosa are also known [1-4]. PMML, indeed, is a very rare tumor. About 25 cases have been reported in the literature, but not all of them fulfil the requested criteria. In particular an extrapulmonary origin of the tumor has to be excluded. We report a case of a patient with [...]