Sabotin Ryan P, Maley Joan E, Hoffman Henry T
Department of Otolaryngology, University of Iowa Hospitals and Clinics, Iowa City, IA, USA.
Department of Radiology, University of Iowa Hospitals and Clinics, Iowa City, IA, USA.
Radiol Case Rep. 2022 Oct 4;17(12):4766-4768. doi: 10.1016/j.radcr.2022.09.054. eCollection 2022 Dec.
Our review of the literature shows anatomical variation of the submandibular gland is a rare entity, unlike the variation that can be seen in parotid glands. Specifically, bilateral submandibular abnormality has only been reported on one occasion with limited imaging in our review. We report a 78-year-old female with a history of sialadenitis and sialolithiasis who presents with swelling and pain in the right submandibular gland. Sialography of the right submandibular gland disclosed a second primary duct branching off the main duct to a second submandibular gland. Cannulation of the left submandibular duct was unsuccessful due to scarring of the duct orifice; however, subsequent MR sialography identified marked submandibular duct dilation and the incidental finding of a second anteriorly located left submandibular gland. The anatomic detail provided by conventional digital sialography is contrasted to the useful but less-defined imaging provided by MR sialography. To our knowledge, this is the first reported case of bilateral accessory submandibular glands that has been evaluated using both conventional and MR sialography.
我们对文献的回顾表明，与腮腺中可见的变异不同，下颌下腺的解剖变异是一种罕见情况。具体而言，在我们的回顾中，双侧下颌下腺异常仅在一次报告中出现，且影像学检查有限。我们报告一例78岁女性，有涎腺炎和涎石病病史，表现为右侧下颌下腺肿胀和疼痛。右侧下颌下腺造影显示一条第二主导管从主导管分支至第二个下颌下腺。由于导管口瘢痕形成，左侧下颌下腺导管插管未成功；然而，随后的磁共振涎腺造影显示下颌下腺导管明显扩张，并意外发现左侧第二个位于前方的下颌下腺。传统数字涎腺造影提供的解剖细节与磁共振涎腺造影提供的有用但不太清晰的成像形成对比。据我们所知，这是首例同时使用传统和磁共振涎腺造影评估的双侧副下颌下腺病例。
