Background: Hydatid disease, a prevalent health concern in livestock-producing nations, results from Echinococcus larval stages infection. The disease can affect multiple organs, including the liver, lungs, muscles, bones, kidneys, spleen, brain, and heart. Symptoms range from cough, hemoptysis, and shortness of breath to retention pneumonia, atelectasis, and congestion. Diagnosis involves a combination of patient history, physical examinations, and diagnostic tools such as X-rays and computed tomography scans. Treatment typically entails surgical intervention and albendazole therapy.
 
Case Presentation: A 55-year-old woman with a history of hyperlipidemia and dog care was referred to the Baqiyatallah Heart Clinic for recurrent episodes of chest pain. She was subsequently diagnosed with ischemic heart disease and given standard care, including heparin, for acute coronary syndrome. Upon further evaluation via angiography, stenosis was detected in the left anterior descending artery, prompting a referral for thoracic surgery. After a week-long recovery period, angioplasty and stent placement were carried out, with observations indicating normal right and left ventricular sizes.
 
Discussion and Conclusions: Pulmonary hydatid cysts, frequently resulting from prolonged contact with domestic animals, are typically marked by coughs. Treatment approaches encompass surgical interventions and benzimidazole administration following the procedure. Surgical treatment, particularly thoracotomy resection and pharmacotherapy, is the preferred approach. Hemoptysis, an uncommon occurrence in adults, can also arise from anticoagulant usage. (Iranian Heart Journal 2025; 26(1): 102-106)