Spontaneous Regression of a Thymoma with Mild Pleural Effusion: A Case Report

Introduction: Spontaneous regression of a thymoma is an unusual and rare phenomenon witnessed across the field thoracic medicine. Presentation Case: A 33-year-old man presented with persistent right shoulder pain shortness breath which started 1 month prior to hospital visit. Computed tomography chest was done showed 11.0 cm anterior mediastinal mass bilateral pleural effusion. The refused surgery discharged without any treatment. 7 months later upon evaluation, had regressed more than 70% its size subsequent disappearance Right thoracoscopic thymectomy performed safely complications. Post thymectomy, surgical pathology report analysis specimen consistent diagnosis thymoma. Clinical Discussion: Our reported case example large undergoing spontaneous over time therapy provided. Previous studies have similar phenomena limited insight towards understanding such event. Thymomas are eventually managed by resection remains preferred modality treatment, most commonly via thoracoscopy our along past reports. Conclusion: thymomas widely unwitnessed in practice, thus, recognition this occurrence could provide further disease outcomes.