Abstract

BACKGROUND:

The jugular tubercle is a rounded bony prominence that arises from the inferolateral margin of the clivus. In a previous publication we described the surgical anatomy of the expanded endonasal approach to the jugular tubercle.

OBJECTIVE:

To illustrate the translation of laboratory work to the operating room describing the anatomical and technical nuances of the endonasal approach to the jugular tubercle.

METHODS:

We review the relevant surgical anatomy needed to perform an endonasal approach to the jugular tubercle, and we select four different lesions to illustrate the application of our laboratory findings.

RESULTS:

In the first case, exposure and partial drilling of the jugular tubercle was critical to gain an adequate corridor to the meningioma, particularly to its infero-lateral margin. This allowed for early devascularization, safe extracapsular dissection, and preservation of surrounding neurovascular structures. In addition, the jugular tubercle was hyperostotic and its resection, along with generous dural removal, provided a grade I Simpson tumor resection. In the second (chondrosarcoma) and third (chordoma) cases, the jugular tubercle was infiltrated by tumor, and consequently its complete resection was essential to achieve total tumor removal. In the last case, an unusual ACTH-secreting adenoma recurrence at the jugular tubercle region, the technical modification of the transclival approach presented here was successfully applied to achieve complete resection and Cushing's disease remission.

CONCLUSION:

The transjugular tubercle variant of the expanded endonasal transclival approach allows for direct access to ventro-lateral lesions in the inferior clival/petroclival region with no cerebral or cerebellar retraction, or cranial nerve manipulation during the approach.