What type of testicular tumor is associated with the production of glands?

Embryonal carcinoma is indeed associated with the production of glands within the tumor. This type of testicular germ cell tumor is classified as a non-seminomatous germ cell tumor and is known for its aggressive nature. Histologically, embryonal carcinoma can present with a variety of patterns, including solid nests and glandular formations, reflecting the primitive differentiation of the tumor cells.

In contrast, seminomas do not typically produce glandular structures; they are characterized by sheets of uniform cells. Yolk sac tumors, while featuring characteristic structures like Schiller-Duval bodies, do not primarily consist of glandular elements as seen in embryonal carcinoma. Choriocarcinoma, another type of non-seminomatous tumor, is more notable for trophoblastic tissue and does not produce glands either. Thus, the key distinction here lies in the ability of embryonal carcinoma to produce gland-like structures, which is consistent with its histological characteristics.