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
Some of these are simply sun spots, but there are those that are small brown spots while others are brown scaly spots on legs and upper thighs. For these, the causes may be different and more complicated to be seen as simple sun spots or ageing spots. Here are the common causes of brown spots on thighs and legs. Aging and Dark Spots: As you grow older, the body produces much more melanin than when you are young. This is shown as a sign when your skin develops black or grey spots on the skin. The marks can be flat or small raised brown patches.