Touching painless hard lumps may be cancer, for example, colorectal cancer and liver cancer can be touched with abdominal lumps. It is also possible that some benign diseases may have hard lumps, so if you have hard lumps, you need to go to regular hospital for perfect examination. 1. Colorectal cancer: Colorectal cancer tumor can be touched in the abdomen as a hard lump with large volume, irregular shape and sometimes movable when the tumor grows to a certain degree. Sometimes, it can be movable. Tumor causing fecal matter accumulation in the proximal part of the intestine can also be detected as hard lump in the abdomen. 2. Hepatocellular carcinoma: When the tumor of hepatocellular carcinoma patient increases to a certain size, a hard mass can be touched in the right upper abdomen, accompanied by symptoms such as hepatomegaly, jaundice, loss of appetite, emaciation and so on. 3. Cirrhosis: patients with cirrhosis may find hardened liver with non-smooth surface in the right upper abdomen due to extensive fibrosis of the liver, which can be palpated. 4. Sigmoid colon fecal mass: feces of patients with long-term constipation tend to collect in the sigmoid colon, and painless hard lumps can be detected in the abdomen when the fecal mass is dry and knotted, which is mostly seen in the elderly with long-term constipation. In addition to the above diseases, stomach cancer, pancreatic head cancer, ovarian cysts, abdominal lymph node tuberculosis and other diseases may also be touched in the abdomen painless hard lumps, it is recommended that the patient go to the hospital as soon as possible, timely diagnosis, and be treated accordingly.