Thank you for your question. Some degree of breast asymmetry is completely normal — almost no one is perfectly symmetric — but a noticeable height difference, where one breast sits lower than the other, can usually be improved. Whether the shape is "tuberous" depends on specific features rather than just asymmetry: tuberous breasts tend to have a narrow/constricted base, a higher inframammary fold, herniation of tissue into a puffy/enlarged areola, and a tubular rather than rounded shape. I can comment more precisely with an in-person exam and a couple of standardized views, but from a single photo I can give you the general direction. If you're happy with your size and the main issue is one breast being lower, the most likely solutions are a lift (mastopexy) on the lower side — or a small lift on both to match — to even out the position without adding volume. If there are true tuberous features, treatment often involves releasing the constricted base, lowering or balancing the fold, and sometimes reducing areolar herniation; an implant or fat grafting is added only if you also want more volume, which it sounds like you don't. The good news is that achieving better symmetry while keeping your current size is very feasible. I'd recommend an in-person consultation so I can examine the base width, fold position, areolar shape, and nipple height, then map out the least-invasive plan that gives you symmetry. Bringing this concern in for a proper exam is the best next step.