The prevalence of coronary artery anomalies on CT scan - Experience from a tertiary care center in Pakistan (RCD code: I-1C.1)

Bilal Hussain, Fateh Ali Tipoo Sultan, Zafar Jamil

Research output: Contribution to journalArticlepeer-review


Objectives: This study is an effort to bridge the gap regarding the data of prevalence of coronary anomalies in South Asian countries by utilizing coronary computed tomography angiography (CCTA). Methods: This is a cross sectional, descriptive study done at Aga Khan University Hospital Karachi, Pakistan. All adult patients who underwent CCTA from 1-1-2005 to 1-11-2016 were included in the study. Results: Among 897 patients undergoing CCTA, 36 (4.01%) patients were identified as having coronary artery anomalies (CAA). The mean age of patients was 48.3±11.9 years. Male to female ratio was 3:1. Among patients with CAA, the most common indication for CCTA was screening for coronary artery disease (58.3%). 33 patients (3.67%) showed coronary origin and course anomalies, whereas coronary artery fistulas were identified in 3 patients (0.3%). The most common anomaly identified was the anomalous origin of coronary artery from the opposite coronary sinus with anomalous course (1.4%) with anomalous origin of right coronary artery from the left coronary sinus with an inter-arterial course seen in 9 patients. Single coronary artery was seen in three cases (0.3%), in all these cases the single coronary artery originated from the right coronary cusp. In one patient (0.1%) dual left anterior descending (LAD) system was identified. In two cases (0.2%) fistulous connection of LAD with pulmonary artery was seen, while fistula from LAD to coronary sinus was identified in one patient. Conclusions: This study highlights the fact that the prevalence of coronary anomalies on CCTA in this region is similar to the data reported from the rest of the world.

Original languageEnglish
Pages (from-to)116-121
Number of pages6
JournalJournal of Rare Cardiovascular Diseases
Issue number4
Publication statusPublished - Sept 2017


  • Coronary CT angiography
  • Coronary anomalies
  • Prevalence
  • Rare disease
  • Tertiary care center


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