Abstract
Abstract Presentation A 69-year-old male presented with rapidly worsening symptoms of breathlessness, productive cough, and weight loss. Examination revealed a deviated trachea, and no breath sounds on auscultation of the left side of the chest. Investigations Chest X-ray revealed a giant mass associated with a large pleural effusion, subtotal lung collapse and mediastinal shift. FEV1 was 39% predicted and DLCO 62% predicted. Management Due to the severity of presentation, urgent pleural inspection, drainage, and biopsy were carried out. Compression of the heart resulting in tamponade with increased heartrate and breathlessness was suspected Further investigations and management Pleural biopsies and pleural fluid cytology were negative for malignancy. PET-CT showed mild avidity. Definitive management was tumour mass resection via left double space open thoracotomy. Macroscopy/Microscopy/Immunohistopathology Intra-operatively, the tumour was giant, occupying three quarters of the chest cavity. It measured 21 × 14×8 cm. The whole lung was attached to the chest wall with adhesions. Microscopy revealed patternless architecture, high vascularity, hypercellularity, necrosis, elongated nuclei, pale cytoplasms and mitotic activity of 2-3 mitotic figures per 10-highpower-fields. Immunohistochemistry stained positive with CD34, BCL2, CD99, Ki-67 and STAT6. Diagnosis of SFT was suspected; malignant potential could not be predicted. Follow-up was with repeat CT scans for five years. Recurrence risk was given as 20%. Learning points
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