Spatholobus suberectus, a plant commonly used in Traditional Chinese Medicine (TCM), is traditionally prescribed for various gynecological conditions, including breast lumps (often described as "masses" or "nodules"). In TCM, Spatholobus suberectus (known as Ji Xue Teng) is believed to "invigorate the blood" and "dispel stasis," which are thought to be underlying causes of palpable lumps or masses in tissues such as the breast. Classic herbal formulas containing Spatholobus suberectus are often used for symptoms associated with benign breast conditions, such as fibrocystic breast changes or mastitis.

However, scientific validation for this specific use is limited. Most of the evidence comes from traditional usage and anecdotal reports rather than rigorous clinical trials. Some modern pharmacological studies have explored the anti-inflammatory, antioxidant, and potential anti-tumor properties of extracts from Spatholobus suberectus, but these have not been directly linked to clinical efficacy in treating breast lumps. There is a lack of high-quality randomized controlled trials evaluating its effectiveness for this indication in humans.

In summary, while Spatholobus suberectus is historically and traditionally used in East Asian medicine to address breast lumps, contemporary scientific evidence supporting its effectiveness for this condition is weak and mostly indirect. Thus, its use is primarily justified by traditional rather than scientific evidence.