While metastasis of common sunlight-induced squamous cell carcinoma is unusual, lesions more likely to metastasize are lesions of the lip or ear, lesions that recur after previous therapy, lesions at the site of a burn and those that are more deeply invasive.
The Great Dark Spot was one of a series of dark spots on Neptune similar in appearance to Jupiter's Great Red Spot. GDS-89 was the first Great Dark Spot on Neptune to be observed in 1989 by NASA's Voyager 2 spaceprobe. Like Jupiter's spot, Great Dark Spots are anticyclonic storms. However, their interiors are relatively cloud-free, and unlike Jupiter's spot, which has lasted for hundreds of years, their lifetimes appear to be shorter, forming and dissipating once every few years or so. Based on
How To Get Rid Of Brown Spots On Skin. When skin is exposed to the sun, it causes an increase in the production of cells known as melanocytes that increase melanin in the skin, thus turning the skin darker. These dark skin patches are known as brown spots, age spots, dark spots, sun spots and liver spots. Brown spots generally appear on exposed skin areas like the face, back, neck, chest, shoulders and hands. Some of the main causes of brown spots are sun exposure, aging, and genetics.