Tehran University of Medical Sciences The Research in Heart Yield and Translational Medicine (RHYTHM) 3115-7270 16 1 2021 01 14 34 37 Noor Mohamad Noori Children and Adolescents Health Research Center, Ali-Ibn-Abitaleb Hospital, Zahedan University of Medical Sciences, Zahedan, Iran. Seyed Hosein Solemanzadeh Mousavi Ali-Ibn-Abitaleb Hospital, Zahedan University of Medical Sciences, Zahedan, Iran. Changiz Azadi Ahmadabadi Ali-Ibn-Abitaleb Hospital, Zahedan University of Medical Sciences, Zahedan, Iran. 2020 10 09 2021 01 28 Sharp-object penetration into the chest is rare and may lead to life-threatening complications, hence the significance of early detection and removal. We present an uncommon case of the accidental penetration of a sewing needle into the chest of a 5-year-old girl, with the needle traveling from the entrance site to the right ventricle through the lung tissue. Due to the possibility of cardiovascular accidents, the patient was transferred to a special ward. For positioning and correct actions, TTE and CT scan of the chest with and without contrast were performed and the presence of a tangential needle with the right ventricular wall and inside the pericardium was reported. The patient was taken to the operating room, and after exploring, a 2 cm needle was inserted into the right ventricle and removed. The patient was discharged after 5 days. https://rhythm.tums.ac.ir/index.php/jthc/article/view/1361 https://rhythm.tums.ac.ir/index.php/jthc/article/download/1361/950