Related Experiment Video
Updated: May 9, 2026

Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia
Published on: August 9, 2024
Polypoidal lesions in the nasal cavity.
Kalpana Kumari M K1, Mahadeva K C
1Associate Professor, Department of Pathology, M.S. Ramaiah Medical College , Karnataka, India .
Most nasal cavity polypoidal lesions are nonneoplastic. This study analyzed 100 cases, finding 66% nonneoplastic and 34% neoplastic, with benign and malignant tumors equally represented.
Area of Science:
- Pathology
- Otolaryngology
- Oncology
Background:
- Nasal polyps are growths from nasal and paranasal sinus mucosa, often linked to allergic rhinitis.
- These lesions are typically movable and painless.
Purpose of the Study:
- To investigate the histopathologic diversity of polypoidal lesions within the nasal cavity.
- To classify these lesions as neoplastic or nonneoplastic.
Main Methods:
- Histopathologic examination of 100 consecutive nasal cavity polypoidal lesions.
- Routine Hematoxylin and Eosin staining, with Periodic Acid Schiff (PAS) stains applied as needed.
- Classification based on WHO criteria for neoplastic lesions.
Main Results:
- Out of 100 cases, 66% were nonneoplastic and 34% were neoplastic.
- Benign and malignant neoplastic lesions were equally represented (17 cases each).
- Inflammatory and allergic nasal polyps constituted 44% of cases; anaplastic carcinoma was the most common malignancy.
Conclusions:
- The predominant diagnosis for polypoidal lesions in the nasal cavity is nonneoplastic.
- Age and sex influenced the prevalence of neoplastic versus nonneoplastic lesions.
Related Concept Videos
Nose and Nasal Cavity
Cranial Bones: Lateral View
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...
Olfactory Receptors: Location and Structure
Anatomy of Respiratory System I: Upper Respiratory Tract
Nose and nasal cavity
The nose and nasal cavity represent the main external openings of the respiratory tract.
Epistaxis
Etiology
Possible causes of this condition include high blood pressure, trauma, low humidity, upper respiratory tract infections, allergies, foreign bodies, nasal inhalation of corticosteroids or illicit drugs, excessive use of decongestant nasal sprays, facial or nasal surgery, anatomic malformation, tumors, or systemic...
Assessment of the Mouth
Mouth Inspection
The inspection begins with visually examining the mouth for symmetry, color, and size.

