A new anatomical finding: the paramastoid diverticulum of the sigmoid sinus.

IF 1.4 4区医学 Q2 Medicine

Surgical and Radiologic Anatomy Pub Date : 2024-12-30 DOI:10.1007/s00276-024-03558-9

Mugurel Constantin Rusu, Corneliu Toader, Răzvan Costin Tudose

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引用次数: 0

Abstract

Purpose: The sigmoid sinus (SS) is a major surgical landmark. The paramastoid process (PMP) occurs rarely. Inferior diverticula of the SS were not found or reported previously. We aimed to determine the incidence and detailed anatomy of such morphology of the SS.

Methods: Archived angioCT files of 25 males and 25 females were used. The morphology of the SS was checked on planar sections and by three-dimensional volume renderings.

Results: In 3 female cases (6%), inferior paramastoid diverticula of the SS (PMDSSs) were found, two on the right and one on the left. They were all protruding on the inferior side of the jugular process of the occipital bone. Their heights and inner diameters were, respectively, 9.94/11.01 mm, 8.21/4.85 mm and 5.97/8.72 mm. A high jugular bulb was also found on that side in each case. Each PMDSS had a thin or dehiscent bottom. They were closely related to condylar veins, the occipital artery, the vertebral artery and its venous plexus.

Conclusion: The PMDSS should not be mistaken as a PMP to avoid surgical lesions of the SS. The PMDSS is an unexpected landmark in the suboccipital region.

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乙状窦副乳突憩室的解剖学新发现。

目的：乙状窦（SS）是一个重要的外科标志。顺乳突（PMP）很少发生。SS下憩室未见报道。我们的目的是确定这种形态的发生率和详细的解剖结构。方法：使用25名男性和25名女性的存档血管oct文件。在平面剖面和三维体效果图上检查了SS的形态。结果：3例（6%）女性患者均可见下乳突旁憩室（pmdss）， 2例在右侧，1例在左侧。它们都在枕骨颈突的下侧突出。它们的高度和内径分别为9.94/11.01 mm、8.21/4.85 mm和5.97/8.72 mm。在每个病例中，在那一侧也发现了一个高颈静脉球。每个PMDSS有一个薄的或开裂的底部。它们与髁突静脉、枕动脉、椎动脉及其静脉丛密切相关。结论：PMDSS不应被误认为是PMP，以避免手术对PMDSS的损害，PMDSS是一个意想不到的枕下区地标。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Surgical and Radiologic Anatomy Medicine-Pathology and Forensic Medicine

CiteScore

2.40

自引率

14.30%

发文量

期刊介绍： Anatomy is a morphological science which cannot fail to interest the clinician. The practical application of anatomical research to clinical problems necessitates special adaptation and selectivity in choosing from numerous international works. Although there is a tendency to believe that meaningful advances in anatomy are unlikely, constant revision is necessary. Surgical and Radiologic Anatomy, the first international journal of Clinical anatomy has been created in this spirit. Its goal is to serve clinicians, regardless of speciality-physicians, surgeons, radiologists or other specialists-as an indispensable aid with which they can improve their knowledge of anatomy. Each issue includes: Original papers, review articles, articles on the anatomical bases of medical, surgical and radiological techniques, articles of normal radiologic anatomy, brief reviews of anatomical publications of clinical interest. Particular attention is given to high quality illustrations, which are indispensable for a better understanding of anatomical problems. Surgical and Radiologic Anatomy is a journal written by anatomists for clinicians with a special interest in anatomy.