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Background: Inflammatory pseudotumor is a benign pulmonary tumor of unknown origin which is more common in young adults and children. In this study, successful treatment of total lung collapse using rigid bronchoscopy is reported. Case Report: The patient was a 22-year-old woman with respiratory signs and symptoms and obstructive spirometry pattern. Computed tomography (CT) scan findings represented a total lung collapse after one month of beginning the symptoms. Fiberoptic bronchoscopy showed an endobronchial mass with total left lung collapse, and there was no evidence of malignancy in the biopsy. The patient underwent rigid bronchoscopy, and the endobronchial mass was completely removed. After total removal of the mass using rigid bronchoscopy, total left lung collapse was completely improved, and patient’s signs and symptoms resolved. There was no evidence of recurrence in the follow-up using chest X-ray and fiberoptic bronchoscopy. Conclusion: Inflammatory pseudotumor may have acute presentations, and present with total lung collapse. Rigid bronchoscopy can be considered as a less invasive approach than thoracotomy in patients with pulmonary inflammatory pseudotumor.