Appendiceal mucocele is an obstructivedilatation of the appendix caused byintraluminal accumulation of mucoid material.It is a rare disease. The incidence is 0.2%to 0.3% of all appendectomied specimens.The brush size to 3 cm are considered to besmall, up to 6 cm - average and more than9 cm - giantCases: the patient 50 years old, man,place of residence: the city of UB songinokhairkhan duureg. Specialists of the driver,in the year immediately 2015,02,02 wasoperated with the diagnosis of acuteappendicitis. Complaints on admission:pain on the right side of the abdomen, anagging pain when moving and walking,stomach rumbling. History of the disease:the pain started with 2015,01,31 at 8 pmfrom the bottom of the abdomen. tookhome chloramphenicol but not helpedso 2015,02,02 year at 9 o’clock enteredvia ambulance. Medical examination: thesatisfactory condition of the active position,the skin clean, moist, blood pressure160/110, pulse 98 beats per minute Spo298%. 10*7,7*5,5 см size /Fig.1-2/ , white /Fig. 3-4/ , smooth surface /Fig.1-4/, insideslimy gray mucinous /Fig. 5-6/ bag /Fig. 5/above listed items on a standard attached,aims to study the histology. The result ofthe following: Mucocele of the appendixwith hyalinized wall and with the additionof acute inflammation with microabscesses.

We present the fi rst 2 cases of cochlear implantation in Mongolia using “SONATA” type implant of “MED-EL” Company, Austria. CASE 1: A six years old, female had been diagnosed with bilateral congenital profound hearing loss and had been fi tted with hearing aids for 5 years and received little benefi t from her hearing aids and developed very poor speech and language, used lip reading and have had vocabulary of approximately 10 words. A radiological evaluation showed normal cochlea and auditory nerve. Cochlear implant team including speech therapists and audiologists based on the informed consent of patient’s parent decided that family able to participate in follow-up, speech habilitation programme. Patient implanted with SONATA of MED-EL on 4 August, 2009. Electrodes were inserted fully. After 10 days of switch on of the speech processor the patient showed signs of initial hearing of loud sounds. After 5 months of Auditory Verbal Therapy the vocabulary increased up to 50 words. Hearing, cognition and responses are increasing simultaneously. CASE 2: A 2 years old female. Congenitally deaf in both ears. Fitted with hearing aid for 3 months before the surgery and there was no benefi t from hearing aid. Physically and mentally healthy. Patient implanted with SONATA of MED-EL on 4 August, 2009. Electrodes were inserted fully. On 25th days of switching on of speech processor the patient showed initial hearing of loud sounds. Currently, after 5months of treatment her vocabulary is 2 short words and can recognize 4 syllabeles. She is very active, repeats actions and has open nature, feels comfortable with CI.

Background: This study radiographically evaluated the performance of autologous platelet-rich plasma (PRP) applied in tooth sockets. Methods: Sixty-eightextractions of bilateral impacted mandibular third molars were performed in 30 patients. In one side the autologous platelet-rich plasma was placed and the other side was filled with a blood clot. Radiographic bone density was quantified 3 times by the same examiner at different moments using ImageJ software, and data was statistically analyzed by SPSS 24.0 software. Results: There was significantly faster bone formation in sockets treated with PRP (P<0.001). Significant healing was observed in the first month (P<0.004), second month (P< 0.001) for the PRP group. Conclusions Use of the autologous PRP method can skip the resorptive phase, and proceed bone regeneration. Thus, to prove the results histomorphometric analysis is preferred.

Background: TED (thyroid eye disease) is an inflammatory disease of the orbit caused by autoimmune diseases of the thyroid, which adversely affect the vision, appearance, and quality of life. Exophthalmos and eyelid retraction are the main features of TED, which can lead to ocular motility, diplopia, optic neuropathy, and permanent vision loss. The study aims to determine the most common clinical signs of TED in Mongolians and define whether there is a correlation with the levels of thyroid autoantibodies. Methods: The study involved 102 patients with TED and 81 patients with Graves’ ophthalmopathy. The clinical features of TED were identified and evaluated by activity score (CAS) and severity of GO using the European Group of Graves’ Orbitopathy (EUGOGO). Results: The mean age of TED patients was 42.6±11.2, which was younger than GD patients (P=0.012). The current smoker was 24 patients (23.5%) with TED, which is relatively higher than GD (P=0.0001). The most common ocular signs were eyelid retraction 80 (78.4%), proptosis 77 (75.5%), diplopia 14 (13.7%) and 4% vision loss. There were no differences in proptosis between the right (18 mm, median) and left eye (17.8 mm, median) (P>0.05). The mean CAS score was 3.09±1.72 and varied depending on gender and smoking. According to EUGOGO, 62.7% of the patients were moderately severe. Only 7 % of the patients were in the sight-threatening stage, presenting optic neuropathy and corneal breakdown. The mean TSI level in patients with TED was 37.95 ± 35.41 IU / ml, which was 2.7 times higher than the mean in patients with GD. Conclusions Eyelid retraction and exophthalmos are the most common clinical signs of TED. Early diagnosis of these features can prevent complications of the disease. Determining serum TSI levels will help in the treatment and monitoring of TED.

Background: The shapes of the eye and upper eyelid are distinctive facial landmarks. The palpebral fissure is composed of the free edges of upper and lower eyelids the lateral and medial canthus. Many researchers confirmed that the morphometric characteristics of the palpebral fissure, canthal distance and exophthalmometirc value (EV) vary according to race, ethnicity, age and sex and normative values which may serve as a reference in the index population. Knowledge of normal dimensions, the existence of asymmetry of the palpebral fissure is of value in several clinical specialties including ophthalmology, plastic and reconstructive surgery and traumatology, where it plays a part in the patient evaluation, management and outcomes. Methods: This cross-sectional study was conducted in the Ophthalmological Department, Third State Central Hospital between January 2022 and August 2022. We included participants who are above 18 years, no history of congenital or traumatic craniofacial deformities, any orbital fractures, tumors and surgeries. All measured values that represent eyelid shape and EV were calculated by mean and standard deviation for statistical analysis. Results: A total of 103 participants aged 19-86 were included in the study, of which 44 (42.7%) were male and 59 (57.3%) were female. The distance between the lateral and medial canthus ranged from 20 to 35 mm, and the mean of the right and left side was 28.30+3.23 mm and 28.05+2.99 mm, respectively (p=0.561). The palpebral fissure height ranged from 5 to 13 mm, and the mean of the right and left side was 8.85+1.65 mm and 8.80+1.65 mm, respectively (p=0.816). The mean distance between the lateral canthi were 90.39+5.57 (range: 80-105 mm), whereas the mean distance between the medial canthi were 63.75+4.25 (range: 53-73 mm). The orbital height varied between 27-43 mm (33.73+3.72) and 26-44 mm (33.78+3.73) on the right and left sides, while the orbital width varied between 26-47 mm (36.75+4.53) and 27-45 mm (36.72+4.42) on the right and left sides, respectively. When measuring the exophthalmometric value (EV), the axial position of the eyeball, with the Hertel’s exophthalmometer, it ranged from 8 to 20 mm on both sides (mean value 13.68+3.01 and 13.71+3.00 on the right and left sides, respectively), and there was no statistically significant difference in symmetry (p=0.94). Conclusion The results are determined different from the findings of Chinese, Korean, Afro-American and Caucasian population based studies. Thus further evaluation is required to represent the normative value of Mongolian index population, that is highly beneficial for clinical assessment, diagnosis and management.