(3) There is debate regarding whether an association exists between allergic rhinitis and antrochoanal polyps
. (4) In adults, histologic findings such as inflammatory cell infiltration and lack of eosinophils suggest that antrochoanal polyps
are a result of inflammation and are less of an allergic process.
Light microscopic examination reveals inflammatory infiltration of predominantly lymphocytes, plasma cells, and neutrophils in antrochoanal polyps
compared to that of nasal polyps originating from the middle meatus.
Many pathological masses in the nose may look like antrochoanal polyp
, for example dermoid cysts, meningoencephaloceles, teratomae or sphenochoanal polyps .
Pathological findings noted were Septal deviation (67.3%), Osteomeatal complex block (96.1%), Maxillary sinusitis (96.1%), Anterior ethmoidal sinusitis (86.5%), Posterior ethmoidal sinusitis (67.3%), Sphenoid sinusitis (34.6%), Frontal sinusitis (42.3%), Polyps which included sinonasal polyposis (22.7%), Antrochoanal polyps
(45.4%) and Allergic Fungal Polyposis (31.8%) are present in 42.3% of patients.
Haziness of sinuses was found in 19 cases of antrochoanal polyp
and 16 cases of ethmoidal polyp.
(6) The fact that maxillary sinusitis is more common than sphenoid sinusitis may explain why antrochoanal polyps
are more common than sphenochoanal polyps.
INCLUSION CRITERIA: Bilateral nasal polyposis, antrochoanal polyp
were seen in 16 patients (90.0%) in the age group of 11 to 30 years.
Case report of a mass that mimicked an antrochoanal polyp
. Ear Nose Throat J 1999;78: 556-7.
DISCUSSION: The antrochoanal polyp
is a benign solitary polypoidal lesion that usually arises from maxillary sinus.
(8,12) CT of the paranasal sinuses is necessary to identify the characteristic features of a sphenochoanal polyp so that it can be differentiated from an antrochoanal polyp
and to determine the anatomic landmarks for endoscopic sinus surgery.
Diagnostic nasal endoscopy was done: a smooth grayish white polypoidal mass in the left nasal cavity arising from the left (?) maxillary sinus and extending into the nasopharynx Provisional diagnosis of Antrochoanal polyp
/ Malignancy of left maxillary sinus were arrived at.