Metastatic bone disease occurs when cancer spreads from a primary organ site to bone. The spine is the most common location of metastatic disease. See the image below. Lateral radiograph shows sclerotic metastasis of the L2 vertebra in a 54-year-old man with prostatic carcinoma.
Sometimes, they can be tolerated in smaller amounts. For example, three glasses of milk a day may cause an individual excessive gas, but limiting milk to one glass per day may cause no problems. Sometimes tolerance to certain foods can be acquired. Many people complain that adding fiber to the diet causes gas.
Excess upper intestinal gas can result from swallowing more than a usual amount of air, overeating, smoking or chewing gum. Excess lower intestinal gas can be caused by eating too much of certain foods, by the inability to fully digest certain foods or by a disruption in the bacteria normally found in the colon.