Malignant Melanoma at the Dorsal Region Presented with Pleural Dissemination—A Case Report—

Abstract

A 63-year-old man, who complained of cough and exertional dyspnea and was found to have massive pleural effusion on chest radiography, was admitted to our hospital for further examinations. Multiple extrapleural and diaphragmatic nodules were observed on a chest CT scan, but no evidences of parenchymal lung diseases and abnormal signs of mediastinum were found. There was no malignancy in the pleural fluid cytology and so thoracoscopy was performed for diagnosis. There were many black or brown nodules of all sizes on the visceral and parietal pleura and diaphragm. Thoracoscopic biopsy of these lesions offered the definite diagnosis of malignant melanoma. The melanoma was considered to have originated in the congenital nevus on the back skin.