Sinuses are hollow air filled spaces in the skull, found between the eyes (ethmoid sinus), the forehead (frontal sinus), nose (sphenoid sinus) and cheek bones (maxillary sinus). The sinuses are lined with mucus secreting cells. This mucus traps the germs and the pollutants in the sinuses and is drained, through the opening of the sinus, into the nasal cavity. This keeps the sinuses clean and healthy.
Adenoidectomy is a surgery for removal of the adenoids. Adenoids are small lumps of tissue located behind the nose, just above the tonsils. However, they are not as directly visible as the tonsils. The adenoids are crucial in fighting off infections in babies and young children. They disappear as a part of the normal growing process, and are not seen in adults.
Septoplasty is a reconstructive surgery performed to straighten a deviated nasal septum. The septum acts as a dividing wall between the two nostrils. Deviations in the septum may develop as a part of the normal growth process during childhood and puberty. The deviation can also be present at birth or can be caused from injury to the nose.