Open AccessEncapsulated sinonasal schwannoma mimicking an antrochoanal polyp
Author(s) -
Abdulrazak Ajiya,
Nafisatu BelloMuhammad
Publication year - 2019
Publication title -
nigerian medical journal/nigerian medical journal
Language(s) - English
Resource type - Journals
eISSN - 2229-774X
pISSN - 0300-1652
DOI - 10.4103/nmj.nmj_104_19
Subject(s) - medicine , nasal cavity , schwannoma , maxillary sinus , radiology , sinus (botany) , paranasal sinuses , anatomy , botany , biology , genus
Extracranial schwannomas are uncommon neoplasms of the sinonasal tract arising from peripheral nerve shealth. Mostly acapsulated on histology, but few cases of encapsulated schwannomas have been reported. Its symptoms are nonspecific and initial clinical diagnosis is frequently missed. We report a 13-year-old boy with a huge, encapsulated sinonasal schwannoma initially thought to be an antrochoanal polyp. Computed tomography scan demonstrated a huge irregularly shaped mildly enhancing isodense mass in the right nasal cavity with lateral extension to the ipsilateral maxillary sinus, superior extension into the ethmoids and frontal sinuses and posteriorly into the nasopharynx. The tumour was completely excised via a lateral rhinotomy and patient is still on follow-up.