Spectum of sino-nasal polyposis on cross sectional imaging in a rural population visiting a rural medical college.

Abstract

Background : Nasal polyps are common
pathologies, usually seen in teens and young
adults of both genders. Their etiology remains
unclear, but they are known to have association
with allergy, asthma, infection, cystic fibrosis, and
aspirin sensitivity. They present with nasal
obstruction, anosmia, rhinorrhoea, post nasal
drip, and less commonly facial pain. Clinical
examination reveals single or multiple grey
p o l y p o i d m a s s e s i n t h e n a s a l c a v i t y.
Computerized tomography allows evaluation of
the extent of the disease and is essential if surgical
treatment is to be considered. Aims: To study
spectrum of sino - nasal polyposis on its imaging
f e a t u r e s o f C T. M a t e r i a l s & M e t h o d :
Multidetector CT is now routinely used. Imaging
should be reviewed with a wide window width of
1500–2500 HU, centred at 100–400 HU.
Whenever soft-tissue abnormality is detected, its
attenuation should be assessed with narrow
window widths. Submillimetre slices are
reconstructed, with multiplanar reformats allowing
accurate delineation of sinonasal anatomy and
localisation of pathology, its extent and
complications.Spectrum of sino-nasal polyposis in 100 patients who were clinically diagnosed to
suffer from polyps were imaged using CT scan.
Results : Out of 100 patients studied, small polyps
in the middle meatus were (16) and polyp causing
middle meatal blockage( 28 ),polyps extending
beyond middle meatus without complete
obstruction were seen in (24), massive nasal
polyposis seen in (18), chronic sinusitis with polyp
were seen in (14) patients. Conclusion : Sinonasal
polyposis has a wide spectrum of
presentation on cross sectional imaging. Most
commonly seen is polyp causing middle meatal
blockage.