en مروري Reviews <p style="text-align: justify;">The main goal of this report was to share with clinicians an atypical presentation of pulmonary thromboembolism (PTE) in a young male`s post-appendectomy, whom he had no significant predisposing factors for such disease. The case also introduced for re-examining the challenges of PTE clinical manifestations which may mimic other differential diagnosis. PTE is an abrupt blockage of the pulmonary artery by a thrombus. Such thrombus is generated by a blood clot which has been formed, separated and migrated from the leg and/or pelvic veins toward the lung.The lung tissue`s circulation is impaired which later episode results hypoxia and infarction. These events initiate a set of PTE clinical manifestations.</p> Post-appendectomy, Surgical complication, Deep vein thrombosis, Pulmonary thromboembolism, Immobilization 81 86 http://irj.uswr.ac.ir/browse.php?a_code=A-10-254-3&slc_lang=en&sid=1 Ahmad Ali Akbari Kamrani akbarikamrani@gmail.com No Department of Clinical Sciences, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran. Hashem Shemshadi shemshadii@gmail.com Yes Department of Speech Therapy, University of Social Welfare and Rehablitation Sciences, Tehran, Iran. Mahyar Ghafoori mahyarghafoori@gmail.com No Department of Radiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.