“…However, with surgical experience the conversion rate reduces and currently does not exceed 5% in expert centres (5, 15, 50, 54, 58, 60-61, 73, 94). The main reason to conversion was bleeding and fatal haemorrhage has been reported to be the most serious intraoperative incident (47,50,56,(89)(90)(94)(95). Other less crucial reported causes of conversion represent technical intricacies due to poor exposure, severe adhesions, anatomic limitations, close proximity to major vascular structures, doubts in regard to tumour extent or resection margin status, and lack of operative progress (3,10).…”