Case Report
Copyright ©The Author(s) 2021. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Mar 16, 2021; 9(8): 1940-1945
Published online Mar 16, 2021. doi: 10.12998/wjcc.v9.i8.1940
Computed tomography imaging features for amyloid dacryolith in the nasolacrimal excretory system: A case report
Zi-Gang Che, Ting Ni, Zhen-Chang Wang, De-Wang Wang
Zi-Gang Che, Zhen-Chang Wang, Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
Zi-Gang Che, Ting Ni, Department of Radiology, Nanjing Tongren Hospital, Southeast University Medical College, Nanjing 211102, Jiangsu Province, China
De-Wang Wang, Department of Pathology, Nanjing Tongren Hospital, Southeast University Medical College, Nanjing 211102, Jiangsu Province, China
Author contributions: Che ZG drafted the manuscript; Ni T reviewed the literature and contributed to manuscript drafting; Wang DW made a pathological diagnosis; Wang ZC reviewed the manuscript; all authors issued final approval for the version to be submitted.
Supported by The National Natural Science Foundation of China, No. 61931013, No. 61527807 and No. 62041103; Nanjing Medical Science and technique Development Foundation, No. QRX17207.
Informed consent statement: Informed written consent was obtained from the patient for publication of this report and any accompanying images.
Conflict-of-interest statement: The authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
CARE Checklist (2016) statement: The authors have read the CARE Checklist (2016), and the manuscript was prepared and revised according to the CARE Checklist (2016).
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Zhen-Chang Wang, MD, PhD, Chief Doctor, Professor, Department of Radiology, Beijing Friendship Hospital, Capital Medical University, No. 95 Yong An Road, Xicheng District, Beijing 100050, China. cjr.wzhch@vip.163.com
Received: November 5, 2020
Peer-review started: November 5, 2020
First decision: December 28, 2020
Revised: January 8, 2021
Accepted: January 22, 2021
Article in press: January 22, 2021
Published online: March 16, 2021
Processing time: 120 Days and 1.4 Hours
Core Tip

Core Tip: Localized amyloidosis is a very rare cause of nasolacrimal duct obstruction and dacryocystitis. It has been reported that amyloidosis in nasolacrimal excretory system may be invasive or present as a pseudo-dacryolith with clear boundary in liquid or colloidal forms. However, massive dacryolithiasis can also be formed and obstruct the nasolacrimal excretory system as a consequence. Computed tomography examination can be a noninvasive tool for preoperative evaluation in case of incapability of dacryocystorhinostomy and nasal endoscopy of fully displaying deeper structures of nasolacrimal excretory system.