Journal Basic Info

  • Impact Factor: 1.809**
  • H-Index: 6
  • ISSN: 2474-1655
  • DOI: 10.25107/2474-1655
**Impact Factor calculated based on Google Scholar Citations. Please contact us for any more details.

Major Scope

  •  Asthma
  •  Allergy & Immunology
  •  Respiratory Medicine
  •  Nuclear Medicine
  •  Microbiology
  •  Orthopedics & Rheumatology
  •  Pulmonary Medicine
  •  Cardiology


Citation: Ann Clin Case Rep. 2023;8(1):2448.DOI: 10.25107/2474-1655.2448

A Large Antrochoanal Polyp - Case Report and Example of an Anchoring Bias

Stawarz K*, Zwolinski J and Galazka A

Department of Head and Neck Cancer, Maria Sklodowska-Curie National Research Institute of Oncology, Poland

*Correspondance to: Katarzyna Stawarz 

 PDF  Full Text Case Report | Open Access


Introduction: Antrochoanal polyps (ACP) are benign lesions originating in a maxillary sinus. Their most common symptoms are unilateral nasal obstruction, rhinorrhea and nasal bleeding. Nevertheless, a large mass in a nasal cavity causing dysphagia and weight loss may point to a cancerous diagnosis. In this report we present a case of a large antrochoanal polyp mistaken for a nasal carcinoma. Case Report: A 52-year-old women was admitted to the clinic because of a tumor in the left nasal cavity. Her symptoms were nasal obstruction, nasal bleeding and cachexia. On examination a fragile mass in the left nasal cavity was found which was confirmed by nasal endoscopy. The CT scan showed a hypo-attenuating mass filling the nasal cavity with a marginal bone destruction. Several biopsies did not allow for making a diagnosis. As a consequence, the patient was scheduled for an open biopsy through a lateral rhinotomy access. The histopathological report confirmed the diagnosis of ACP. Following surgery, the patient developed a wound infection and nasal bleeding what required tamponade and made her staying in a hospital longer. Conclusion: A large unilateral nasal mass even with bone destruction and cachexia symptoms is not obviously of a cancerous origin. An algorithm of thorough assessment with PET scan, MRI and a gold standard procedure should always be performed. Assuming that this patient suffers from a nasal carcinoma is an example of an anchoring bias and a confirmation bias as well.


Nasal polyps; Anchoring bias; Nasal sinuses

Cite the Article:

Stawarz K, Zwolinski J, Galazka A. A Large Antrochoanal Polyp - Case Report and Example of an Anchoring Bias. Ann Clin Case Rep. 2023; 8: 2448..

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