<p class="abstract"><strong>Background:</strong> Nasosinus mucoceles are expansive pseudocystic formations of the sinuses of the face formed by chronic retention of mucus in a sinus cavity due to ostial obstruction.</p><p class="abstract"><strong>Methods:</strong> This was a descriptive study of retrospective data collection. It was carried out over ten years (from 01 January 2008 to 01 January 2018) at the otorhinolaryngology and head and neck surgery department of the Donka University Hospital.   </p><p class="abstract"><strong>Results:</strong> We found an incidence of 1.3 cases per year. The average age was 39.77 years with extremes of 10 years and 60 years. The sex ratio was 0.6. Headaches (92.3%) and facial swelling (76.9%) were the main reasons for consultation. The ethmoid-frontal form was predominant (53.8%). CT scan of the sinuses was performed in all patients. Magnetic resonance imaging was not performed. The diagnosis of certainty was made by anatomy pathology (100%). The paralateral nasal route was the main approach (46.2%). The simple postoperative follow-ups were simple (100%). Lethality was zero.  </p><p class="abstract"><strong>Conclusions:</strong> We noted a low incidence of naso-sinus mucoceles in our series. The symptomatology was fairly standard. Imagery and anatomy pathology established the diagnosis. However, endonasal surgery has become essential in the management. Simple postoperative follow-up would be related to the experience of the surgeon, the severity of the lesions and the proper conduct of post-operative care.</p>

<p class="abstract"><strong>Background:</strong> Cholesteatoma of the middle ear remains a dangerous chronic otitis that can potentially lead to serious complications. The treatment remains exclusively surgical. The aim of the study was to describe the epidemiology and anatomical functional results of surgery for middle ear cholesteatoma.</p><p class="abstract"><strong>Methods:</strong> This was a cross-sectional study of retrospective data collection over 5 years (from 01 January 2016 to 30 December 2020) and conducted at the ENT and head and neck surgery department of Donka University Hospital.   </p><p class="abstract"><strong>Results:</strong> We collected 50 cases of cholesteatoma. The prevalence was 1.33%. The mean age was 33.58±18.07 years. The sex ratio was 0.92. Purulent otorrhea (96%) and hearing loss (84%) were the main symptoms. We noted 56% pocket retraction and 36% tympanic perforation. Conductive hearing loss accounted for 76% of cases. The CT scan of the rocks noted 69.89% of filling associated with the lysis of the walls of the middle ear. Masto-atticotomy associated with tympanoplasty was performed in 78.89% of cases. Encapsulated cholesteatoma was the most frequent (66%). The epitympanum was its elective seat (44%). The ossicular chain was lysed in 76%. The incus was the most affected ossicle (66%). Ossiculoplasty was performed in 66%. The postoperative course was simple (74%). Medium and long-term follow-up revealed normal anatomical restoration of the neo-tympanum in 94%. Hearing improvement was noted in all our patients with an average hearing gain of 10-30 dB in 52%.</p><p class="abstract"><strong>Conclusions:</strong> The treatment was exclusively surgical. However, we obtained largely satisfactory anatomical and functional results.</p>

Giant osteoma of the maxillary sinus: a case report