Title

Evaluation of Outcomes After Endoscopic Endonasal Surgery for Large and Giant Pituitary Macroadenoma: A Retrospective Review of 39 Consecutive Patients

Publication Date

2015

Journal Title

World Neurosurg

Abstract

BACKGROUND: The endoscopic endonasal approach for pituitary neoplasms has shown similar efficacy compared with the microscopic approach. However, outcomes and complication rates with larger macroadenomas is not as well documented. This study addresses the efficacy and outcome of the fully endoscopic endonasal approach for large and giant pituitary adenomas. METHODS: Endoscopic endonasal resection was performed in 39 patients with large (>3 cm) or giant (>4 cm) pituitary macroadenomas. Outcomes were assessed using formal visual examinations, endocrine status, and neurologic examinations. Statistical analyses of multiple variables were addressed for correlation to visual, endocrine, and neurologic outcomes. RESULTS: Gross total resection of the pituitary macroadenoma was achieved in 22 of 39 (56.4%) patients based on postoperative magnetic resonance imaging. Higher Knosp grade was associated with near-total resection or subtotal resection (P = 0.0004). All patients had improved or stable visual symptoms. Time to diagnosis, preoperative visual deficit, and tumor size were not significant predictors of visual outcome. Of patients, 34 (87.1%) had a "good" endocrine outcome, whereas 5 did not. Among the 5 patients who did not have a good outcome, 1 had new hypopituitarism, and 4 required increased dosages of pharmacologic therapy. All patients with recurrent tumors had stable visual and good endocrine outcomes. Postoperative cerebrospinal fluid leak occurred in 4 patients; lumbar drainage resolved the leak in 3, and reoperation was performed in 1 patient. There were no new cranial nerve deficits, new neurologic deficits, or mortality. CONCLUSIONS: Endoscopic endonasal resection of large and giant pituitary macroadenomas is safe and efficient. Postoperative complications, including cerebrospinal fluid leak, are low. Surgical efficacy of the fully endoscopic endonasal approach for large and giant macroadenomas makes the technique a preferable option in this subset of patients.

Volume Number

84

Issue Number

4

Pages

978-88

Document Type

Article

EPub Date

2015/06/16

Status

Faculty; Northwell Researcher

Facility

School of Medicine; Northwell Health

Primary Department

Neurosurgery

PMID

26074433

DOI

10.1016/j.wneu.2015.06.007