Background / Aim. Chronic subdural hematoma (CSDH) is one of the most frequent neurosurgical conditions with an overall incidence ranging from 1.72 to 20.6 per 100,000persons per year. The surgical procedure for chronic subdural hematoma is relatively simple and usually performed in the supine position. Reported reoccurrence rates range from 11.7% to 28%. Postperative pneumocephalus was previously identified as a sole predictor of reoccurrence. This study evaluates the procedure in the sitting position and the possible impact on the reoccurrence rate. Methods. The study included 31 patients who underwent awake craniostomy with closed system drainage for chronic subdural hematoma (16 in supine and 15 in sitting position) in our department in the period from December 2016 to March 2018. Results. Twenty-two males and nine females were included in the study. The overall reoccurrence rate was 19% (22% and 18% in females and males respectively). The reoccurrence was noted in 5 patients who underwent surgery in the supine position, and in one case operated in sitting position. Our results revealed a lower reoccurrence rate in patients undergoing surgery in the sitting position, although not reaching statistical significance (OR: 0.18, CI: 0.01-1.42, p=0.172). Conclusion. Craniostomy in the sitting position under local anesthesia is a safe, simple, and reliable procedure for chronic subdural hematoma treatment. Apart from being very comfortable for the patient, according to our initial results, it might also lead to a lower reoccurrence rate, probably due to the better management of the air inflow, and consequential pneumocephalus. Apstrakt Uvod / Cilj. Hronični subduralni hematom je jedan od najčešćih neurohiruršklih entiteta sa ukupnom incidencom javljanja od 1,72 do 20,6 na 100 000 osoba godišnje. Hirurška procedura za lečenje CSDH je relativno jednostavna i obično se izvodi u ležećem položaju. Stopa recidiva iznosi od 11,7% do 28%. Postoperativni pneumocefalus se smatra 4 nezavisnim pojedinačnim prediktorom recidiva. Ova studija evaluira izvođenje procedure u sedećem položaju so eventualnim uticajem na stopu recidiva. Metode. Studija je obuhvatila 31 pacijenta kome je urađena kraniostomija sa zatvorenim sistemom za drenažu hroničnog subduralnog hematoma pod lokalnom anestezijom (16 u ležećem položaju na ledjima i 15 u sedećem), u periodu od decembra 2016., do maja 2018.godine. Rezultati. U studiju su bila uključena 22 muškarca i 9 žena. Ukupna stopa recidiva je iznosila 19% (22% kod žena i 18% kod muškaraca). Recidiv se javio kod 5 pacijenata operisanih u ležećem položaju i kod samo jedne pacijentkinje operisane u sedećem položaju. Naši rezultati su pokazali trend ređe pojave recidiva kod pacijenata operisanih u sedećem položaju, iako razlika u našoj grupi pacijenata nije statistički značajna (OR:0,18, CI:0,01-1,42, p=0,172). Zakljuĉak: Kraniostomija u sedećem položaju pod lokalnom anestezijom je sigurna, jednostavna i pouzdana procedura za lečenje hroničnog subduralnog hematoma. Pored toga što je veoma komforna za p...