ECP 2023 Final Programme

E-Posters 167 ECP 2023 Dublin E-PS-23 E-PS-22 031 Malignant peripheral nerve sheath tumour with perineural differentiation (malignant perineurioma) Edurne Pérez Béliz, Spain L. Rojo-Alvarez, I. Abdulkader Nallib, J. Cameselle-Teijeiro, M. Piso Neira, F. Caneiro Gómez 032 Primary pleuropulmonary synovial sarcoma: a case report with review of the literature Daniela Proca, USA D. Zenezan, J. Yin 033 Beckwith-Weidemann syndrome and rhabdomyosarcoma: review of the literature and a novel case of MyoD1 spindle cell/ sclerosing rhabdomyosarcoma Gayatri Raghuram, United Kingdom M. Madni, H. Mugalaasi, A. Haider, T. McCulloch 034 Desmoplastic small round cell tumour in a palatine tonsil: a unique case report Laura Isabel Rojo-Alvarez, Spain E. Pérez Béliz, F. Caneiro Gómez, I. Abdulkader Nallib, J. Cameselle-Teijeiro 035 Phosphaturic mesenchymal tumour: series of three cases in a tertiary hospital Laura Isabel Rojo-Alvarez, Spain E. Pérez Béliz, F. Caneiro Gómez, I. Abdulkader Nallib, J. Cameselle-Teijeiro 036 Infantile fibrosarcoma with ETV6-NTRK3 fusion: a rare case report Onur Sahin, Turkey I. Tosun, G. Unverengil, I. Zemheri 038 Endometriosis of sciatic nerve: case report Ljubica Simic, Serbia J. Jevtic, G. Djuricic, M. Popovic Vukovic, J. Sopta 039 Rhabdomyosarcoma in the oral cavity of a paediatric patient: a rare case Betül Simsek, Turkey E. Atik Doğan, D. Gürsoy Kuzuluk, M. Cemaloğlu 040 Secondary malignancy in Li-Fraumeni syndrome patient Justyna Tuziak, Poland P. Wiśniewski, H. Koseła-Paterczyk, P. Rutkowski, K. Seliga, A. Tysarowski, A. Szumera-Ciećkiewicz 041 Myxoid angiomatoid fibrous histiocytoma with EWSR1-CREM fusion: a case report Justyna Tuziak, Poland M. Wągrodzki 042 Giant dedifferentiated liposarcoma of the omentum with rhabdomyosarcomatous differentiation – a rare case Christos Valavanis, Greece E. Souka, G. Stanc 043 Dedifferentiated leiomyosarcoma with heterologous osteosarcoma component in the thigh: case report and review of literature Meryem Zaryouhi, Morocco R. Ben Tayab, L. Chbani E-PS-23 E-Posters Thymic and Mediastinal Pathology 001 Thoracic SMARCA4-deficient undificient tumour Arzu Demir, Turkey E. Kilic Bagir, D. Gümürdülü 002 A single-institution experience of primary mediastinal large B-cell lymphoma: a report of 88 cases Loued Farah, Tunisia R. Ayadi, H. Ichrak, B. Emna, O. Khouildi, A. Ayadi, S. Hamza 003 Pseudotumoral mediastinal amyloidosis: a histological surprise! Loued Farah, Tunisia R. Ayadi, B. Emna, O. Khouildi, A. Ayadi, S. Hamza, H. Ichrak