Background: Type C coronary lesions represent a complex angiographic scenario, although they are rather common in the daily clinical practice of percutaneous coronary intervention (PCI). This article aimed to report the Brazilian clinical practice outcomes of PCIs performed in patients with type C lesions. Methods: This was a retrospective study with information obtained from the electronic database of the Central Nacional de Intervenções Cardiovasculares (National Cardiovascular Intervention Centre -CENIC) of the Sociedade Brasileira de Hemodinâmica e Cardiologia Intervencionista (Brazilian Society of Haemodynamics and Interventional Cardiology -SBHCI), which gathers information on PCI procedures in a dedicated database, entered by volunteer physicians who are members of several Brazilian institutions. Results: Between January, 2010 and December, 2011, 1,693 patients with type C lesions were registered in CENIC. Most patients were males (68%), with a mean age of 63 ± 26.3 years, 40.9% were diabetic, and 45.4% had acute coronary syndromes. Procedural success was achieved in 95.6% of the cases, mortality was 2.1%, acute myocardial infarction was observed in 5%, and repeat target-lesion revascularisation was 0.5% in patients during the hospitalisation. Conclusions: PCIs in type C lesions presented high success and low complication rates in a selected population from the CENIC registry. The former morphological classification of the lesions, still used in the registry, does not properly stratify the outcomes of PCIs. It is urgently necessary to update the data collection form and related measures in order to improve the quality control of the registry.