Gastrointestinal Stromal Tumors
This is a rare type of stomach related cancer. The abnormal growth of the interstitial cells of Cajal in the gastrointestinal tract is known as gastrointestinal stromal tumors. Sometimes there are only small tumors which do not cause a problem while some can grow at a very fast rate and can cause vomiting with blood, which decreases the blood level in the body and further leads to tiredness. These are mostly due to genetic mutations.