Poorly differentiated primary pulmonary synovial sarcoma (PD-PPSS) is a rare, aggressive neoplasm, which occurs in 0.5% cases of all lung malignancies. The diagnosis of PD-PPSS can be very challenging on cytology samples. We present here an unusual case of PD-PPSS diagnosed by 1 While SS accounts for 5%-10% of all softtissue sarcomas, it is rare to originate in the lung; pulmonary sarcomas, overall, comprise <0.5% of primary lung malignancies. 2 SS in older people is more likely to occur at unusual sites such as mediastinum, retroperitoneum, lung, and other viscera.
| Case reportA 70-year-old African American, smoker male was recently diagnosed with DLBCL on an abdominal mass by EUS-FNA. During the lymphoma work-up and staging, his CT/PET scan showed left lower lobe lung, hypermetabolic mass measuring 2.4 3 2.3 3 3.2 cm. The clinical consideration of lung mass was most likely metastasis from his known lymphoma (DLBCL) versus primary bronchogenic carcinoma. A bronchoscopy was performed with bronchial brushing and EBUS-TBNA of the mass. Lymph nodes at station 7 were also sampled through EBUS-TBNA.
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