Intraoperative magnetic resonance imaging in pituitary macroadenoma surgery: an assessment of visual outcome.

Abstract:

:Pituitary macroadenomas most frequently present with visual loss. Although transsphenoidal surgery remains the treatment of choice for patients with neurological manifestations, there have been several advances in its implementation over the last 5 years. Intraoperative magnetic resonance (MR) imaging has emerged as a novel quality control measure, with the potential to guide the surgeon to tumor remnants concealed from the operating microscope. Investigators have reported enhanced resections when using intraoperative MR imaging, leading to complete tumor removal in a larger proportion of cases. Further debulking of unresectable lesions may also prove beneficial in delaying symptom recurrence and facilitating radiotherapy, where distance between the tumor and optic chiasm is an important predictor of visual outcome. However, confirmation of such advantages is complicated by the fact that most macroadenomas are both indolent and hormonally silent, necessitating years of follow-up. Experienced pituitary surgeons will operate as safely with intraoperative MR imaging as without it, perhaps due to a balance between more elaborate resections and better visualization. Intraoperative MR imaging represents a new technique applied to an old problem in tumor surgery: complete, safe resection.

journal_name

Neurosurg Focus

journal_title

Neurosurgical focus

authors

Jones J,Ruge J

doi

10.3171/FOC-07/11/E12

subject

Has Abstract

pub_date

2007-01-01 00:00:00

pages

E12

issue

5

issn

1092-0684

journal_volume

23

pub_type

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