Benign tumors can also cause pain in some cases. We all know that malignant tumors can cause cancer pain, but in fact benign tumors can cause pain as well. For example, subcutaneous lipoma, when growing to a certain extent, may compress the peripheral nervous system and cause neuropathic pain. Benign ovarian teratoma can cause severe abdominal pain when it undergoes a tibial torsion, which is one of the common causes of acute abdomen and needs urgent treatment, otherwise it may lead to necrosis and rupture hemorrhage, which is life-threatening. In addition, some benign tumors themselves can lead to tissue inflammation, which can also cause pain. For example, benign breast tumors tend to block the breast ducts, leading to ductitis and causing significant pain. Finally, some benign tumors of neurological origin can cause pain themselves, for example, benign nerve sheath tumors, which originate from nerve sheath tissue, can cause severe pain. In conclusion, benign tumors can also cause pain, and pain or not cannot be used as a marker to distinguish benign and malignant tumors.