Masmoudi Mohamed, Hasnaoui Mehdi, Guizani Rihab, Lahmar Rihab, Jerbi Saida, Mighri Khalifa
Département d´Oto-rhino-laryngologie, Hôpital Tahar Sfar Mahdia, Mahdia, Tunisia.
Département d´Imagerie Médicale, Hôpital Tahar Sfar Mahdia, Mahdia, Tunisia.
Pan Afr Med J. 2021 May 4;39:10. doi: 10.11604/pamj.2021.39.10.27813. eCollection 2021.
salivary gland tumors mainly occur in the parotid gland. These tumors are rare but are characterized by histological heterogeneity, thus posing diagnostic challenges. Magnetic resonance imaging (MRI) is currently the most reliable imaging test for the evaluation of these tumors. The purpose of this study was to highlight the diagnostic value of MRI and its role in parotid gland tumor histopathology.
we conducted a retrospective descriptive and analytical study of 50 patients with parotid gland tumor, operated and treated in the ear, nose and throat (ENT) Department and in the Department of cervicofacial surgery at the Tahar Sfar University Hospital of Mahdia between 2001 and 2019. All patients underwent preoperative MRI of the parotid gland.
out of 50 patients included in the study, 36 (72%) had benign tumor and 14 (28%) malignant tumor. The sensitivity of MRI for the diagnosis of malignant tumor was 92.8% with a specificity of 97.2%, a negative predictive value of 93% and a positive predictive value of 97%. With respect to benign tumor characterization, MRI suggested the diagnosis of Warthin tumor in all cases (13 cases) and of pleomorphic adenoma in 22 out of 23 cases. There were two diagnostic errors: MRI suggested the diagnosis of pleomorphic adenoma instead of adenoid cystic carcinoma in one case and of malignant tumor instead of pleomorphic adenoma due to diffusion restriction.
MRI is highly efficient in the assessment of parotid tumor histology and, especially, after the advent of new functional sequences. However, only histological examination allows to confirm with certainty the diagnosis.
唾液腺肿瘤主要发生于腮腺。这些肿瘤较为罕见，但具有组织学异质性，因此带来了诊断挑战。磁共振成像（MRI）是目前评估这些肿瘤最可靠的影像学检查。本研究的目的是突出MRI的诊断价值及其在腮腺肿瘤组织病理学中的作用。
我们对2001年至2019年期间在马赫迪耶塔哈尔·斯法尔大学医院耳鼻喉科（ENT）和颈面部外科接受手术治疗的50例腮腺肿瘤患者进行了回顾性描述性和分析性研究。所有患者均接受了腮腺术前MRI检查。
在纳入研究的50例患者中，36例（72%）为良性肿瘤，14例（28%）为恶性肿瘤。MRI诊断恶性肿瘤的敏感性为92.8%，特异性为97.2%，阴性预测值为93%，阳性预测值为97%。关于良性肿瘤的特征，MRI在所有病例（13例）中提示了沃辛瘤的诊断，在23例中的22例中提示了多形性腺瘤的诊断。有两例诊断错误：一例中MRI提示为多形性腺瘤而非腺样囊性癌，另一例因扩散受限提示为恶性肿瘤而非多形性腺瘤。
MRI在评估腮腺肿瘤组织学方面非常高效，尤其是在新的功能序列出现之后。然而，只有组织学检查才能确定确诊。
