Hybrid intercalated duct lesion of the parotid:A case report  

作　　者：Dominykas Stankevicius Donatas Petroska Linas Zaleckas Otilija Kutanovaite 

机构地区：[1]Centre of Oral and Maxillofacial Surgery,Institute of Dentistry,Faculty of Medicine,Vilnius University,Vilnius LT-08217,Lithuania [2]Department of Pathology,Forensic Medicine and Pharmacology,Institute of Biomedical Sciences,Faculty of Medicine,Vilnius University,Vilnius LT-03101,Lithuania [3]Department of Head and Neck Surgery and Oncology,National Cancer Institute,Vilnius LT-08660,Lithuania

出　　处：《World Journal of Clinical Cases》2022年第33期12358-12364,共7页世界临床病例杂志

摘　　要：BACKGROUND Intercalated duct lesions(IDLs)are considered relatively benign and rare tumors of salivary glands,that were only described recently.Their histopathological appearance may range from ductal hyperplasia to encapsulated adenoma with hybrid patterns of both variants.It is thought that IDLs may be the precursor for malignant proliferations,therefore their correct diagnosis remains crucial for proper lesion management.It is the first reported IDL case arising from the accessory parotid gland(APG),which stands for less frequent but higher malignancy rate tumor developmental area.CASE SUMMARY A 24-years-old male with no accompanying diseases was referred to the hospital with a painless nodule on the right cheek.On physical examination,the stiff,immobile,and painless mass was palpable in the anterior portion of the right parotideomasseteric region,just superior to the parotid duct.Ultrasound examination demonstrated 1.5 cm×1.0 cm hypoechogenic mass on the anterior part of the right parotid gland.Ultrasound-guided fine needle aspiration cytology,followed by liquid-based fine needle aspiration biopsy were performed.However,the results were uninformative.A contrast-enhanced magnetic res-onance imaging(MRI)of the parotid was obtained,demonstrating a 1.5 cm×1.0 cm×0.5 cm tumor with high intensity capsule together with low intensity core in the very anterior part of right superficial lobe,situated in the APG.An MRI features were uncharacteristic to common parotid tumors,therefore surgical resection followed up.After histopathological examination,the final diagnosis of hybrid IDL was confirmed.CONCLUSION Fine needle aspiration biopsy might not always be diagnostic,and given the malignant potential,the surgical resection of such lesion remains the treatment of choice.

关 键 词：Intercalated duct lesion Accessory parotid gland Intercalated duct adenoma Intercalated duct hyperplasia Salivary gland Case report 

分 类 号：R739.87[医药卫生—肿瘤]