Abstract
Pulmonary adenocarcinoma is an extremely infrequent cancer in children. This cancer usually presents with unspecific manifestations that lead to delays in diagnosis. The treatment protocol for adenocarcinoma in children remains challenging due to its rarity. We presented an 8 years old with a chief complaint of a non-purulent cough, dyspnea, hemoptysis, and weight loss. Decreased lung sounds and wheezing in the left lung were heard during auscultation. The radiographic evaluation showed a mediastinal mass in the left middle upper. A biopsy was performed, and adenocarcinoma was reported. Based on being at stage 1, a lobectomy was the proper treatment for her. Although adenocarcinoma is rare in pediatrics, we suggested that physicians consider taking chest X-rays in patients with persistent respiratory manifestations, especially those with critical symptoms. Early detection leads to diagnosing patients in lower stages, which results in a good prognosis and better treatment outcomes.