Related Experiment Video
Updated: Jan 26, 2026

Author Spotlight: Advancing Metabolomics Analysis of Rare Hematopoietic Stem Cells
Published on: February 23, 2024
Rhinolithiasis: about an observation of a rare condition
Jawad Lahma1, Reda Hejjouji1, Imane Azzam1
1ENT Department, Ibn Sina University Hospital, Mohammed V University, Rabat, Morocco.
Abstract:
Rhinolithiasis is a rare condition often neglected or unknown that tends to disappear in developed countries and corresponds to a solid calcification by gradual deposition of calcareous salts around a central resorbable or non-resorbable foundation of varying shape and size. The most common symptom is a long-term unilateral purulent rhinorrhea and unilateral nasal obstruction. Nasal endoscopy and imaging are interesting for the positive diagnosis but especially to highlight the anatomical anomalies or related pathologies. Therapeutic management requires endonasal extraction of the rhinolith under general anesthesia. We report an observation of rhinolithiasis treated in our department associating a significant deformation of the nasal pyramid to osteolysis.
Related Concept Videos
Naturalistic Observations
Actor-Observer Effect
Observational Learning
Observational Studies
There are three types of observational studies – Prospective, retrospective, and cross-sectional.
Prospective Study
Prospective studies, also known as longitudinal or cohort studies, are carried out by collecting future data from groups sharing similar characteristics. One...
Data Collection by Observations
An astronomer viewing the motion and brightness of stars in the sky and recording the data is an example of observational data collection. A botanist recording...
Conditions on Early Earth

