The authors report a clinical case of a 15-year-old female patient with a giant pulmonary hydatid cyst that was diagnosed only after rupture and successfully operated. The patient suffered a minor trauma during gym class, and a short time after the trauma she vomited profusely with a large amount of colorless fluid. Subsequently, her condition worsened, with fatigue, severe pain in the right hemithorax, severe cough with poor sputum, dyspnea and unspoken hemoptysis, so she was admitted to the hospital. After admission, a CT scan confirmed the diagnosis of pulmonary hydatid cyst complicated by endobronchial rupture with subtotal involvement of the right lower lobe. The patient underwent surgery by right lateroposterior thoracotomy. After removal of the parasitic larvocyst, the remaining postechinococcectomy cavity was padded. In the postoperative period, partial insufficiency of the padding sutures was observed, which was treated conservatively. The authors conclude that echinococcectomy with silver nitrate treatment of the residual cavity and filling with superimposed bursae in giant pulmonary hydatid cyst complicated by endobronchial rupture is an effective technical procedure that allows to reduce postoperative morbidity and hospitalization time in this serious complication.