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Objective: To analyze the effect the LYMPHA technique on the incidence of upper limb lymphedema in patients with breast cancer after complete axillary lymph node dissection.

Material and methods: There were 89 patients with breast cancer and signs of metastatic lesion of axillary lymph nodes who underwent complete axillary lymph dissection. In group 1 (41 patients), the LYMPHA technique was used simultaneously with lymph node dissection; in group 2 (48 patients) - lymph node dissection alone.

Results: The follow-up period was 1 year. The LYMPHA technique prolonged surgery and decreased duration of postoperative lymphorrhea. The incidence of upper limb lymphedema was 9.8% and 22.9%, respectively.

Conclusion: The LYMPHA technique was effective for prevention of upper limb lymphedema after complete axillary lymph node dissection in the treatment of breast cancer.

Objective: To evaluate the efficacy and quality of life in long-term period (1 year) after total knee replacement in various age groups.

Material and methods: We studied 134 patients after unilateral primary total knee replacement. The KOOS and SF-36 questionnaires were used to assess the therapeutic effect (functionality and symptoms) and quality of life in patients with knee osteoarthritis.

Results: At baseline, group I (young patients) had low KOOS pain scores (39.42±16.42), function scores (50.18±19.16) and QoL scores (18.2±15.9) compared to other age groups. A year after surgery, group I (<55 years) had significantly lower KOOS scores of pain, function and quality of life compared to group III (>65 years). Multiple regression analysis showed that age was a significant predictor of pain, but not a function after a year.

Conclusion: Total knee replacement gives a noticeable improvement in pain, functionality and quality of life in all age groups. However, there are significant age-related differences in preoperative assessment of pain, quality of life and mental health, as well as in final indicators of postoperative pain and quality of life. Indeed, young patients (<50 years) report more intense pain and worse quality of life. These data may be used in clinical practice to improve decision-making and patient expectations before total knee replacement.

Objective: To evaluate the efficacy and safety of tranbronchial cryobiopsy (TBCB) with 1.9-mm and 1.1-mm cryoprobes in patients with peripheral pulmonary lesions (PPLs).

Material and methods: We analyzed 34 patients (mean age 60 years) with PPLs who underwent bronchoscopy with TBCB. Mean lesion size was 31.5 mm, upper lobe localization was predominant (47% of cases). CT signs of appropriate bronchus were identified in 79% (27/34) of cases. Manual branch tracking and virtual bronchoscopy (VB) were performed pre-procedurally, and radial endobronchial ultrasonography (rEBUS) was performed during bronchoscopy for accurate positioning of PPLs. TBCB was performed using 1.9-mm (n=19) or 1.1-mm (n=15) cryoprobes without fluoroscopic guidance. Incidence and severity of bleeding and pneumothorax were evaluated in all patients.

Results: Total efficacy of TBCB was 76.5% (26/34): 78.9% (15/19) for 1.9-mm cryoprobe and 73.3% (11/15) for 1.1-mm cryoprobe (p=0.702). Efficacy depended on the presence of CT signs of bronchus (presence - 94%, absence 14.3%, p<0.001) and PPL size (94% for PPL >30 mm and 58.8% for PPL <30 mm, p=0.016). Central probe position during rEBUS was associated with 94.7% diagnostic efficacy (18/19), adjacent probe position - 72.7% (8/11) (p=0.088). Bleeding grade 3 (Nasville) occurred in 5.8% (2/34) of cases, and no pneumothorax was observed.

Conclusion: TBCB is an effective and safe diagnostic method for PPLs.

Objective: To evaluate the quality of life before and after video-assisted thoracoscopic plication of relaxed dome of diaphragm.

Material and methods: The study included 17 patients operated on for unilateral relaxation of diaphragm. We analyzed quality of life in preoperative period, 1, 3, 6 and 12 months after surgery using the SF-36 and EuroQ-5D-5L questionnaires. To assess the impact of abnormality on respiratory function, we estimated diaphragm position, spirometry data and SGRQ scores.

Results: FVC increased by 16.5% after 1 month, 19.5% after 6 months and 20.1% after 12 months. In addition, FEV1 significantly increased (by 12.6% after 1 month, 10.1% after 6 months and 12.7% after 12 months). Mean values of diaphragm elevation in postoperative period decreased by 25.5-25.6%. According to the SF-36 and EuroQ-5D-5L questionnaires, physical and psychological health components significantly increased within a month after surgical treatment. According to the SGRQ questionnaire, influence of disease on overall status decreased a month after surgery as evidences by lower total score (p<0.05).

Conclusion: Objective and survey data revealed significant improvement in quality of life after surgery. A trend towards higher quality of life was demonstrated by all questionnaires in a month after surgery.

Objective: To reduce the incidence of postoperative complications and mortality after conversion of external fixation device into various types of submerged osteosynthesis in patients with polytrauma.

Material and methods: A retrospective and prospective analysis of treatment outcomes in 351 patients with polytrauma was divided into 2 stages. At the first stage, we analyzed significant predictors of complications after conversion of osteosynthesis in the 1^st group (retrospective analysis). At the second stage, we estimated the efficacy of the developed scale for assessing the risk of complications after conversion of osteosynthesis in a prospective group of patients.

Results: According to the complication risk assessment scale for conversion of osteosynthesis, analysis of time to surgical treatment depending on objective criteria in patients with polytrauma can significantly reduce the incidence of postoperative complications by 14% and mortality rate by 1.7%.

Conclusion: The complication risk assessment scale after conversion of osteosynthesis will personalize the approach to timing and methods of conversion. This measure will eliminate the «second hit» in damage control orthopedics and improve the results of treatment.

Parenchyma- sparing liver resections are aimed at maximizing the possible preservation of parenchyma not affected by the tumor - a current trend in hepatopancreatobiliary surgery. On the other hand, a prerequisite for operations is to ensure their radicality. To effectively solve this problem, all diagnostic imaging methods available in the arsenal are used, which make it possible to comprehensively solve the issues of perioperative planning of the volume and technical features of the planned operation. Diagnostic imaging methods that allow intraoperative navigation through intraoperative, instrumentally based determination of the tumor border and resection plane have additional value. One of the methods of such mapping is ICG video fluorescence intraoperative navigation. An analysis of the clinical use of the domestic video fluorescent navigation system "MARS" for parenchymal-sparing resections of focal liver lesions is presented. An assessment was made of the dynamics of the distribution of the contrast agent during ICG videofluorescent mapping during parenchymal-sparing resection interventions on the liver, with the analysis of materials from histological examination of tissues taking into account three-zonal videofluorescent marking of the resection edge, performed using the domestic videofluorescence imaging system «MARS».

Objective: To study the possibilities of minimally invasive methods for removing intra-abdominal calculi after laparoscopic cholecystectomy.

Material and methods: There were 5 patients with abdominal abscesses associated with infected calculi after previous laparoscopic cholecystectomy at the Sklifosovsky Research Institute for Emergency Care between 2020 and 2023. Mean age of patients was 55±12 years. There were 3 (60%) women and 2 (40%) men. All patients underwent minimally invasive treatment.

Results: Four patients (80%) underwent percutaneous drainage of abscess with subsequent replacement by larger drains and removal of calculi with endoscopic assistance. Event-free period after cholecystectomy was 44±32 months. One patient developed subhepatic abscess in 72 months after laparoscopic cholecystectomy. This patient underwent transluminal removal of calculus through the duodenal wall. There was 1 calculus in 3 (60%) patients, 2 calculi in 1 (20%) patient and 3 calculi in 1 (20%) patient.

Conclusion: The above-mentioned cases demonstrate successful minimally invasive interventions for symptomatic abdominal calculi after laparoscopic cholecystectomy. Minimally invasive treatment can reduce surgical aggression and accelerate rehabilitation.

Congenital tracheal stenosis in children is a rare, severe and life-threatening respiratory tract malformation characterized by respiratory failure. We have performed 74 surgical interventions in these patients under extracorporeal membrane oxygenation between 2013 and 2022. In this article, we present surgical treatment of a newborn with congenital tracheal stenosis. For the first time in the world, the patient underwent thoracoscopic resection and reconstruction of the trachea under extracorporeal membrane oxygenation.

Resolution of the Expert council on surgical care for hemophilia A patients on emicizumab use.

Objective: To evaluate the possible etiological factors of spontaneous pneumomediastinum and to describe a case that was unusual in its etiology: a thyroid cartilage fracture as a result of sneezing.

Material and methods: Six patients (four male, two female, aged 16-82 years) were hospitalized with spontaneous pneumomediastinum diagnosed with a chest X-ray in five patients and 100% with computed tomography. Treatment was symptomatic.

Results: The commonest symptoms (cough, shortness of breath, hoarseness) were in four patients. Spontaneous pneumomediastinum developed in three cases as a result of bronchospasm during an attack of bronchial asthma, in one patient after exercise, in one after fibrogastroscopy, in one after sneezing. We report a 30-year-old man who presenting subcutaneous emphysema on the neck, hoarseness, pain when swallowing, hemoptysis developed after sneezing. His computed tomography revealed a pneumomediastinum due to fistula of the fracture of the thyroid cartilage following sneezing while simultaneously obstructing both nostrils. At laryngoscopy, there was a linear hematoma in the resolution stage on the anterior wall of the larynx. He was treated conservatively and recovered rapidly. There are no previous published reports of spontaneous pneumomediastinum following fracture of the thyroid cartilage.

Conclusion: Fracture of the thyroid cartilage as a result of a sharp rapid increase in airway pressure during a sneeze with blocked nasal passages can be one of the rare causes of spontaneous pneumomediastinum. Avoid closing both nostrils at the same time when sneezing.