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. 2023 Mar;165(3):667-675.
doi: 10.1007/s00701-022-05415-3. Epub 2022 Nov 10.

The importance of preserving the superior hypophyseal artery infundibular branch in craniopharyngioma surgery

Hiroo Sasaki  1 , Kazuhito Takeuchi  2 , Yuichi Nagata  2 , Kuniaki Tanahashi  2 , Akihiro Mizuno  2 , Hideyuki Harada  2 , Yugo Kishida  3 , Tadashi Watanabe  4 , Tetsuya Nagatani  3 , Ryuta Saito  2
Affiliations

The importance of preserving the superior hypophyseal artery infundibular branch in craniopharyngioma surgery

Hiroo Sasaki et al. Acta Neurochir (Wien). 2023 Mar.

Abstract

Purpose: Postoperative pituitary dysfunction, a critical problem in the treatment of craniopharyngiomas, can occur even when the pituitary stalk is preserved. We hypothesized that compromise of the primary superior hypophyseal artery (pSHA) might be related to this occurrence.

Methods: We performed a retrospective review of 131 patients with craniopharyngioma who underwent surgery from April 2009 to September 2021. The inclusion criteria were initial surgery, endoscopic transsphenoidal surgery, preoperative normal pituitary function or pituitary dysfunction in one axis, and morphological preservation of the pituitary stalk. The branches of the pSHA consist mainly of the chiasmatic branches (Cb), infundibular branches (Ib), and descending branches (Db). We analyzed the association between postoperative pituitary function and preservation of these branches.

Results: Twenty patients met the criteria. Preoperative anterior pituitary function was normal in 18 patients, and there was isolated growth hormone deficiency in two patients. No patient had preoperative diabetes insipidus (DI). Anterior pituitary function was unchanged postoperatively in eight patients. Of these eight patients, bilateral preservation of pSHA Ib was confirmed in seven patients. Bilateral preservation of pSHA Ib was the only factor associated with preserved anterior pituitary function (p < 0.01). Fifteen patients were free of permanent DI, and the preservation of any given pSHA branch produced no significant difference in the postoperative occurrence of permanent DI.

Conclusions: Our study shows that bilateral preservation of pSHA Ib provides favorable postoperative anterior pituitary function in craniopharyngioma surgery; however, such preservation may have little effect on the postoperative occurrence of DI.

Keywords: Craniopharyngioma; Pituitary function; Pituitary stalk; Superior hypophyseal artery.

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