We report a 17-year-old male with a histopathologic diagnosis of lymphangioleiomyomatosis after surgery for a pneumothorax. In general, lymphangioleiomyomatosis has been considered a female-specific disease. However, there are a few lymphangioleiomyomatosis cases reported in males, and our patient is the youngest case reported. Spontaneous pneumothorax occurs most commonly in males in their late teens and early twenties. Histopathologic diagnosis cannot always be performed in young males with pneumothorax. However, simple diagnosis should be avoided, and lymphangioleiomyomatosis should be considered as an underlying disease. This remarkable case provides new and valuable clinical insights into young male pneumothorax.
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