Going for a second opinion. It is a whole about the size of an eraser. I can pass a Qtip from on side of my nasal cavity to the other. My last ENT went from let's find the cause to its probably idiopathic and wasn't worried so eager to see this one's opinion.
Hello and hope you are doing well.
If only the mucosa of the nasal cavity is damaged, it is likely to grow back. The nasal block could be due to a sinus infection, a cold or a chronic allergy. It could also be due to a deviated nasal septum. Sinus infection causes blockage of flow especially when a person lies down. The blockade is affected by the side to which the person turns also. You will need to consult your primary care physician for proper assessment. In the meantime practice good breathing exercises, humidify your room and do steam inhalations.
Hope this helped and do keep us posted.