This is both a great question and a common concern for many rhinoplasty patients who are interested in having a prominent dorsal hump removed. The truth is that removing the dorsal hump actually results in a narrower nasal bridge but, because the dorsal hump is typically visible as a thin ridge from an anterior view, the removal of the hump can subjectively lead to the impression that it has become wider. Although this seems paradoxical, it becomes easy to understand once you look at what a dorsal hump represents and what changes occur in attempting to correct it. The dorsal hump is formed primarily by a very prominent nasal septum. As you might already know, the nasal septum is the thin dividing wall that separates your right and left nostrils. The septum is a key structural portion of your nose and it serves to support your nasal dorsum. However, when the septum is too large, it can affect the shape of your nasal profile. In addition to the septum, a dorsal hump also includes the junction between the nasal bones and upper cartilages of the nose, and this area has quite a bit of significance as it represents the co-joining of all three major supporting structures of your nose (labelled as the "keystone" area by many). When viewed from the front, the hump is prominent as a thin ridge of tissue, mostly because it is primarily made up of the septum. Because of this, the nasal dorsum can appear as being very thin when in reality the rest of the nose is of normal or even longer width. When a surgeon removes a large dorsal hump, s(he) essentially cuts off the excess septum and bone/cartilage of the keystone area. When this is done, it leaves something known as an "open roof deformity" that represents exactly that, a nasal dorsum without a roof. In order to correct that, the rhinoplasty surgeon has to break the nasal bones in (imagine tilting the walls of a roofless house inwards to close the roof). When that is done, the nasal dorsum often becomes narrower, which is something that is usually sought after by both the patient and surgeon and therefore not problematic. So, you can see that even though removing the nasal hump actually makes the dorsum thinner, because the prominence of the hump is removed it can actually appear as if the nose is wider. To what degree your nose will "widen" following hump reduction depends on the size and prominence of the septum and in the hump. Ideally, your surgeon can offer you preoperative morphs that can illustrate the expected results. I recommend that you seek the recommendations of a local board-certified rhinoplasty surgeon for further information. Best of luck!