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ADENOID CYSTIC CARCINOMA MISINTERPRETED AS ANTROCHOANAL POLYP: A RARE PRESENTATION.

R K Brar1, J N Bharti1, J S Nigam1

  • 1Dept. of Pathology, Andaman & Nicobar Islands institute of Medical Sciences, Port Blair, India.

Annals of Ibadan Postgraduate Medicine
|August 23, 2021
PubMed
Summary

Adenoid cystic carcinoma (ACC) can present as a sinonasal polyp, mimicking inflammatory conditions. This highlights the importance of histopathological examination for accurate diagnosis of sinonasal tumors.

Keywords:
Maxillary sinusNosePASSinonasal polyp

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Area of Science:

  • Oncology
  • Pathology
  • Otorhinolaryngology

Background:

  • Adenoid cystic carcinoma (ACC) is a rare oral tumor but the most common salivary gland malignancy in the sinonasal tract.
  • Sinonasal ACC often presents with non-specific symptoms, mimicking inflammatory sinus disease or causing neurological issues due to perineural invasion.

Observation:

  • A 35-year-old female presented with nasal obstruction and headache.
  • CT scans showed an antrochoanal polyp without bone involvement.
  • Histopathology revealed adenoid cystic carcinoma, characterized by small hyperchromatic cells and hyaline-like material.

Findings:

  • The case demonstrates that sinonasal polyps can be neoplastic, not solely inflammatory.
  • Accurate histopathological diagnosis is crucial for sinonasal lesions presenting as polyps.

Implications:

  • This case underscores the need to consider neoplastic etiologies in sinonasal polyps.
  • Early and accurate diagnosis of sinonasal ACC can improve patient outcomes.