[Anatomical factors of temporal bone residual cholesteatoma: our experience]. / Osobennosti stroeniya visochnoi kosti kak faktor retsidiva kholesteatomy: nash opyt.

The article describes clinical cases of invasive cholesteatoma of the temporal bone pyramid, leading to a massive destruction of the surrounding structures. Paying attention to the importance of knowing the microsurgical anatomy of critical structures of temporal bone (the anterior bony plate (cog), the tensor tympani fold and the tendon, the tympanic orifice of the eustachian tube, the pretympanic recess, tympanic sinuses) bearing a significance and helping to improve the removal of the invasive cholesteatoma.

[A case of isolated sphenoid osteoma with suppurative sinusitis in a 15-year-old child]. / Izolirovannaya osteoma klinovidnoi pazukhi v sochetanii s gnoinym sfenoiditom u rebenka 15 let.

Isolated sphenoid osteomas are very rare even in adults. There are extremely few publications on pediatric cases of sphenoid osteomas. This paper presents a case of isolated sphenoid osteoma combined with suppurative sphenoiditis in a 15-year-old patient. The child presented with persistent headache resistant to medical treatment. Endoscopic sphenotomy allowed both to remove osteoma and to relieve the symptoms of sinusitis. The presented case can be considered as the third detailed description of the sphenoid osteoma in children and the first demonstration of the effectiveness of the endoscopic approach for its removal.

[Experimental evidence for regenerative treatment of chronic tympanic membrane perforation]. / Eksperimental'noe obosnovanie metoda tkanevoi inzhenerii dlya zakrytiya stoikikh perforatsii barabannoi pereponki.

OBJECTIVE: The aim of our study was an experimental evaluation of tissue engineering approach to chronic tympanic membrane perforation closure. MATERIALS AND METHODS: Chronic tympanic membrane perforation models were created both sides in 12 chinchillas. Right sided perforations were divided into two equal groups (A and B) according to treatment; left sided perforations were used as a control group. Group A perforations were treated with collagen scaffold and fibroblast growth factor, group B perforations were treated with collagen scaffold only. During follow-up, we provided otovideoendoscopy for closure rates assessement every 2 weeks. In case of perforation closure, a morphological investigation of the regenerate was performed. RESULTS: Group A perforations were totally closed 2 weeks after treatment in all animals. In group B, complete closure of perforation was achieved after the third treatment procedure in one case. There were no spontaneous perforation closure in the control group. According to morphological investigation, the restoration of trilaminar structure was observed only in tissue engineering group tympanic membranes.

[Extended trans-ethmoidal decompression of the orbit for the treatment of frontal sinus mucopyocele]. / Kombinirovannyi khirurgicheskii dostup pri posttravmaticheskom mukotsele lobnoi pazukhi. Klinicheskoe nabliudenie.

Mucocele of the paranasal sinuses is a rare disease not infrequently associated with massive bone destruction, orbital and intracranial complications. The authors report a patient presenting with the giant post-traumatic frontal mucopyocele associated with the erosion of the posterior and inferior sinus walls that was clinically manifested as hypo- and exophthalmos and has caused the inferolateral eye deviation and orbital decompression. The patient displayed the ophtalmological symptoms 8 years after the frontal sinus fracture. The mucopyocele was treated effectively with the combination of the endoscopic trans-ethmoidal and open trans-frontal approaches. The noticeable intraoperative finding in this patient was the absence of complaints as well as the combination of dura mater defects in the form of its erosion and the leakage of the cerebrospinal fluid together with the presence of purulent discharge in the sinus in the absence of intracranial complications.