unless gross purulent discharge is visible through the sinus ostium and is available for culture. Therefore, the initial approach to management is often clinical, based on history and physical ...

The maxillary sinus ostia is bounded from below by uncinate process (U) and above by the lower bony portion of ethmoid sinuses (E). A narrowing in this critical area can cause sinusitis.

1 = Upper sinus venosus defect 2 = Lower sinus venosus defect 3 = Ostium secundum atrial septal defect 4 = Coronary sinus atrial septal defect 5 = Ostium Primum atrial septal defect The murmur ...

1 = Upper sinus venosus defect 2 = Lower sinus venosus defect 3 = Ostium secundum atrial septal defect 4 = Coronary sinus atrial septal defect 5 = Ostium Primum atrial septal defect The murmur ...