Shpizner B A, Holliday R A
Department of Radiology, New York University Medical Center, NY 10016.
AJNR Am J Neuroradiol. 1993 Mar-Apr;14(2):461-4.
To define the normal CT anatomy of the levator scapulae muscle and to report on a series of five patients who presented with a palpable mass in the posterior triangle due to asymmetry of the levator scapulae muscles.
The contrast-enhanced CT examinations of the neck in 25 patients without palpable masses were reviewed to establish the normal CT appearance of the levator scapulae muscle. We retrospectively reviewed the contrast-enhanced CT examinations of the neck in five patients who presented with a palpable mass secondary to asymmetric levator scapulae muscles.
In three patients who had undergone unilateral radical neck dissection, hypertrophy of the ipsilateral levator scapulae muscle was found. In one patient, the normal levator scapulae muscle produced a factitious "mass" due to atrophy of the contralateral levator scapulae muscle. One patient had an intramuscular neoplasm of the levator scapulae.
Asymmetry of the levator scapulae muscles, an unusual cause of a posterior triangle mass, can be diagnosed using CT.
明确肩胛提肌的正常CT解剖结构，并报告5例因肩胛提肌不对称导致后三角区可触及肿块的患者情况。
回顾25例无可触及肿块患者的颈部增强CT检查，以确定肩胛提肌的正常CT表现。我们回顾性分析了5例因肩胛提肌不对称继发可触及肿块患者的颈部增强CT检查。
3例行单侧根治性颈清扫术的患者中，发现同侧肩胛提肌肥大。1例患者因对侧肩胛提肌萎缩，正常的肩胛提肌产生了假性“肿块”。1例患者肩胛提肌存在肌内肿瘤。
肩胛提肌不对称是后三角区肿块的罕见原因，可通过CT进行诊断。
