 [ Symptoms ] something to worry about colon cancer  my husband is having an endoscope next week he has has severe bloody diareha for years and he has massive swelling on upper left abdomen which started a few months ago the pain is severe to the point where he feels as though he is splitting in one month he has gained 30 pounds due to this mass on his side he is 34 years old i am very concerned about the symptoms i know we will find out soon but i would like to know how to proceed after the endo and do his symptoms sound indicitive of cancer [ Disease ] dark spots can be attributed to hereditary factors fluid retention and excess sun exposure your first step is to exclude any underlying medical problems that can contribute to your dark spots next your physician can recommend a series of brightening agents that may improve your condition