Rhinolithiasis: about an observation of a rare condition.

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.

About a rare disease misdiagnosed as malignant lymphoma or tuberculosis: Kikuchi-Fujimoto's disease.

Kikuchi-Fujimoto's disease KFD is a rare and benign cause of cervical lymphadenopathy. It is an anatomoclinical entity of unknown etiology. The confirmation of the diagnosis is always provided by histological lymph node study.

Large cell neuroendocrine carcinoma of the nasal cavity: an extremely rare and new distinct entity.

Large cell neuroendocrine carcinoma (LCNEC) is a rare but distinct entity of nasal cavity carcinomas. Only a very few cases have been reported in the nasal cavity. Its treatment is not well established.

A case of Kartagener syndrome with rhinolalia clausa.

Kartagener syndrome is an autosomal recessive genetic ciliary disorder comprising of a classic triad of sinusitis, situs inversus and bronchiectasis. It's the one of primary ciliary dyskinesia disorders with manifestations present from childhood. Most patients of PCD have situs inversus.