What identifies an immature teratoma in reportability terms?

An immature teratoma is primarily identified in reportability terms by its histological type and stated behavior. In pathology, teratomas are classified based on their cellular composition and functional characteristics. Immature teratomas are defined histologically by the presence of embryonic or primitive structures, as opposed to mature teratomas, which typically contain only well-differentiated tissues.

The behavior of the tumor, which refers to whether it is considered benign, malignant, or has other forms of biological activity, is crucial in determining its reportability. Immature teratomas, given their potential for malignancy and aggressive behavior, are subject to specific reporting regulations.

While the size, location, and age at diagnosis can play roles in the broader clinical context and management of the tumor, they do not specifically define the entity of an immature teratoma in the same way that its histological characteristics and behavior do. Therefore, understanding the histological classification and behavior provides the most accurate basis for determining reportability status for these tumors.