Human papillomavirus-related carcinoma with adenoid cystic-like features: a series of five cases expanding the pathological spectrum.

This study has further clarified the histological spectrum of this tumour type, and reports the first HPV type 16-related case. Diffuse p16 staining followed by HPV molecular testing is useful in distinguishing HPV-related carcinomas with adenoid cystic features from classic AdCCs.