Fig. 2: Histological features of HPV-associated cervical adenocarcinomas with serous-like features.

A case of HPV-associated adenocarcinoma features complex branching papillary structures with tufted luminal borders (a) as well as high-grade nuclear atypia and frequent mitoses (b), reminiscent of serous carcinoma. Some HPV-associated cases may be predominantly exophytic and associated with adenocarcinoma in situ (c), with slit-like lumina among tumor cells over papillary structures (d). HPV-associated adenocarcinomas with micropapillary component may be accompanied by HSIL (e) and some cases may harbor tumor cells with squamoid appearance as illustrated here (f).