Summary Primary adenosquamous carcinoma of the endometrium with glassy cell features (ASCGCF) is an extremely rare entity and to date, 16 cases of this entity have been reported in the literature. ASC-GCF is an aggressive histological subtype of cervical carcinoma with rapid growth and early metastases; however, very little is known about those originating from the endometrium as they are limited to only a few case reports. Herein, we report a case of primary adenosquamous carcinoma of the endometrium with extensive glassy cell features which posed a major diagnostic challenge by mimicking many entities with its histological diversity.

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