ECP 2023 Final Programme

Poster Sessions a Sunday 86 Sunday, 10 Sept PS-04 005 Addition of tumour microenvironment immune cell composition to conventional prognostic factors improves the perfor- mance of a locoregional recurrence predictive model for oral squamous cell carcinoma Sangeeta Bisheshar, The Netherlands M. van der Kamp, J. de Vries, L. Slagter- Menkema, E. Schuuring, G. Lunter, G. Halmos, B. van der Vegt 006 Investigation into the potential role of R-loops in cisplatin resistant oropharyngeal squamous cell carcinoma (OPSCC) Hannah Crane, United Kingdom K. Hunter, S. El-Khamisy 007 Technical external quality assessment schemes for p16 and high-risk human papil- loma virus detection in head and neck squamous cell carcinoma: report of year-one results Andrew Dodson, United Kingdom D. Nayar, S. Parry 008 Study of CTNNB1 mutations in a case series of 25 basal cell neoplasms of the salivary gland Marina Gómez Tena, Spain N. Fullana Llinas, I. Blazquez, M. Gomà Gallego, M. Vazquez Pariente 009 Determination of vimentin 3 (Vim3) and miR-15a expression profile in ameloblasto- mas: a preliminary study Sibel Elif Gultekin, Turkey H. Goebel, E. Baris, B. Koditz, İ. Atak Secen, M. Freifrau von Brandenstein 010 Multiple primary carcinoma in the oral cavitiy: new insights into clinicopathologi- cal and molecular characteristics Ana B Larqué Daza, Spain J. de la Oliva, P. Jares, P. Castillo, G. Frigola, C. Marti, A. Ferrer, E. Garcia, L. Alos 011 Primary osteosarcoma of the mandible: a report of seven cases Wiem Majdoub, Tunisia K. Ben Lazreg, S. Mestiri, A. Baccouche, L. Jaidane, D. Benletaifa, M. Krifa, A. Bdioui, S. Hmissa 012 PD-L1 immunohistochemistry in head and neck squamous cell carcinoma: an audit of positivity rates and turnaround times at a referral centre in the United Kingdom Karwan Moutasim, United Kingdom B. Templer 013 Nodular fasciitis of parotid gland: an uncommon lesion and a mimic of pleomor- phic adenoma – a case series Saloni Naresh Shah, India S. Kar 014 Tumour immune microenvironment in odontogenic carcinomas Kyu-Young Oh, Korea S. Cho, J. Lee, H. Yoon, S. Hong 015 Diagnostic algorithm for salivary gland carcinomas Bacem Othman, Hungary 016 In silico methods investigation of molecular changes in adenoid cystic carcinomas Muhammed Hasan Toper, Turkey S. Sarioglu 017 Effect of SMARCA4 in anaplastic thyroid cancer Chen Wang, Japan U. Bhawal, H. Okada