Background: Dacryocystorhinostomy (DCR) describes the creation of a functional pathway from the canaliculi into the nose by means of creating an osteotomy and opening the nasolacrimal sac into the nose. It can be performed via an external or endonasal approach.Obstruction of the excretory lacrimal system results in epiphora (tearing). Depending upon the exact cause and location of the obstruction, specific surgical procedures are used. In longstanding nasolacrimal duct obstruction (NLDO), mucus can accumulate, resulting in a mucocele in the nasolacrimal sac or even acute or chronic dacryocystitis. Lacrimal surgery to restore tear drainage is usually the definitive treatment and involved one of the types of dacryocystorhinostomy.To compare the clinical profile of patients with chronic dacryocystitis (CDC) with and without associated chronic rhinosinusopathies who had been submitted to external dacryocystorhinostomy (EDCR). Materials and methods: One hundred and sixty patients with chronic dacryocystitis undergoing external DCR were divided into two groups comprising of 80 patients each. Group Aincluded patients, who underwent external DCR with intraoperative use of mitomycin-C. Group B included those patients who were not administered intraoperative mitomycin-C. Sociodemographic information and the data regarding the patency of the lacrimal drainage system by irrigation with normal saline were collected at the end of the third month after the surgery. Chi-square test was used, at 95% confidence level, as the test of significance to compare the success of surgery between the two groups. Result:A total of 90 patients were included in this study, concerning the gender, there was a predominance of the female with 57 out of 90 patients (63.3%) and males were 33 patients. Age groups of 1-20 years are 5 patients (5.6%) and predominant age in the study was elderly more than 61 years old patients 40%. The clinical characteristics of chronic dacryocystitis are shown in table 3, epiphora was found in 66 patients (73.3%) and absent in 24 patients (26.7%). The discharge by the digital expression of the lacrimal sac was attained in 60 patients (66.7%) and not attained in 30 patients (33.3%). The previous history of exacerbation of chronic dacryocystitis identified as purulent discharge occurred in 15 patients (16.7%) and non-occurrence in 75 patients (83.3%).Conclusion: The physiopathology of the CDC is not fully known. This study reveals a possible influence of CRS on the CDC, emphasizing its action on the exacerbation of the symptoms