CC BY-NC-ND 4.0 · Asian J Neurosurg 2022; 17(04): 672-675
DOI: 10.1055/s-0042-1757222
Case Report

A Case of Pseudoaneurysm of the Superficial Temporal Artery Causing a Massive Subcutaneous Hematoma after Craniotomy

Masaki Tatano
1   Department of Neurosurgery, Kagawa Rosai Hospital, Marugame, Kagaw, Japan
,
Seiya Hayashi
1   Department of Neurosurgery, Kagawa Rosai Hospital, Marugame, Kagaw, Japan
,
Masatoshi Yunoki
1   Department of Neurosurgery, Kagawa Rosai Hospital, Marugame, Kagaw, Japan
,
Michiari Umakoshi
1   Department of Neurosurgery, Kagawa Rosai Hospital, Marugame, Kagaw, Japan
,
Koji Hirashita
1   Department of Neurosurgery, Kagawa Rosai Hospital, Marugame, Kagaw, Japan
,
Kimihiro Yoshino
1   Department of Neurosurgery, Kagawa Rosai Hospital, Marugame, Kagaw, Japan
› Author Affiliations

Abstract

We present a case of a ruptured pseudoaneurysm of the superficial temporal artery (STA) after surgery for intracranial hemorrhage. To our knowledge, only three similar cases have been reported. A 47-year-old man underwent left frontal craniotomy for a left frontal subcortical hematoma. The left STA was not identified during the surgery, and no STA bleeding was observed. The postoperative course was uneventful for 20 days, until the patient experienced a left-side headache and noticed a subcutaneous mass. The mass increase in size within 1 hour and arterial hemorrhage was observed through a tear in the wound. Findings on subsequent contrast computed tomography were consistent with a ruptured pseudoaneurysm arising from the left STA. Emergency evacuation of the hematoma and STA ligation were performed. Pathological findings were consistent with a pseudoaneurysm. STA pseudoaneurysms occasionally grow rapidly and can cause massive hematoma. Surgeons should carefully monitor for evidence of a pseudoaneurysm after craniotomy, even in the absence of intraoperative bleeding from the STA.



Publication History

Article published online:
15 December 2022

© 2022. Asian Congress of Neurological Surgeons. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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