Lobular capillary hemangioma, also known as pyogenic granuloma, is a tumor-like, benign reactive, vascular proliferation, essentially an "-oma" of granulation tissue, usually caused by trauma or local irritation. It is not a true neoplastic process. It does not usually suppurate so the term "pyogenic" is a misnomer.

It tends to occur in children and young adults, and 75% occur on the gingiva. However, the labial mucosa, buccal mucosa, and tongue may also be affected. Over time, lobular capillary hemangiomas may sclerose and become more fibrous.

A particular subset occurs in pregnant patients, and this is called "granuloma gravidarum." These occur in the first trimester of pregnancy and grow steady under hormonal influences throughout pregnancy. Postpartum, the lesions tend to become smaller or involute completely. However, many will remain as a smaller, scarred, fibrotic nodule. Patients are aware of an enlarging mass that may bleed easily.