Obstructive sleep apnea and melanoma

Obstructive sleep apnea (OSA) can cause repetitive drops in oxygen levels. This in turn can increase chronic inflammation and possibly reduce the body's ability to detect and fight tumor cells. This article describes research showing that the more severe the OSA, the more aggressive the melanoma. The reason the two conditions may be linked together is not described in detail in this article - low oxygen levels are implicated. I wonder if using CPAP would help with melanoma treatment?