[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-454911-105":59,"doc-detail-454911-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","hydatid-cyst-masquerading-as-chronic-sialadenitis-an-extremely-rare-locale-of-zoonotic-disease-demystified-by-cytology","Hydatid Cyst Masquerading as Chronic Sialadenitis - An Extremely Rare Locale of Zoonotic Disease Demystified by Cytology","","Hydatid cyst can present in an unusual anatomy, where embryos rarely escape hepatic and pulmonary vasculature to form lesions elsewhere. This case describes a tropical zoonotic infection that mimicked chronic sialadenitis at a rare submandibular site. A 35-year-old woman developed painful swelling for two months. Fine-needle aspiration cytology identified refractile hooklets, later confirmed by serology and histopathology. The report supports a careful, safe cytology-based diagnostic approach.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":35,"@type":76,"position":81},"https://docshare.wps.com/document/healthcare/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/hydatid-cyst-masquerading-as-chronic-sialadenitis-an-extremely-rare-locale-of-zoonotic-disease-demystified-by-cytology/454911/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/hydatid-cyst-masquerading-as-chronic-sialadenitis-an-extremely-rare-locale-of-zoonotic-disease-demystified-by-cytology/454911.png","ImageObject",300,407,{"name":92,"@type":93},"supergirl","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-01","2026-09-30",true,{"@type":102,"interactionType":103,"userInteractionCount":24},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"Why was the hydatid cyst presentation clinically confusing in this case?","Question",{"text":112,"@type":113},"It mimicked chronic sialadenitis, a comparatively innocuous condition, despite hydatid disease commonly involving the liver and lungs rather than the submandibular gland.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What diagnostic method provided the key cytology clue?",{"text":117,"@type":113},"Fine needle aspiration cytology (FNAC) showed numerous refractile hooklets, supporting hydatid disease.",{"name":119,"@type":110,"acceptedAnswer":120},"How was the diagnosis confirmed after cytology?",{"text":121,"@type":113},"The presumptive diagnosis was supported by positive serological evaluation for Echinococcus and confirmed by subsequent histopathological findings.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},454911,1791404545,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":24,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":19,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":52,"preview_page_count":4},962088121634,"https://ap-avatar.wpscdn.com/davatar_9964176cb1d06d4a9deccf72a44ae3dc","Hydatid Cyst Masquerading as Chronic Sialadenitis-an Extremely Rare Locale of Zoonotic Disease Demystified by  \nCytology  \nKavita Gaur 1, Kiran Agarwal 1, *Gautam Bir Singh2, Poornima Kumar 1, Arun Krishna 1  \nAbstract  \nIntroduction:  \nHydatid cyst disguised as chronic sialadenitis, represents a highly unusual clinical presentation. Only rarely do hydatid embryos escape the hepatic and pulmonary vasculature to enter other organ territories. This report highlights a tropical infection hoodwinking clinical suspicion due to an unexpected rare anatomical site of appearance. The present case masqueraded as a comparatively innocuous chronic sialadenitis. In addition, previous work has debated the use of cytology in diagnosing hydatid cyst on the grounds of triggering anaphylaxis.If done carefully, however, rewarding diagnostic returns can be seen, as seen herein.  \nCase Report:  \nWe present an extremely rare case of a 35- year -old female presenting with swelling in the submandibular region with pain for two months. Ultrasonography revealed a hypoechoic lesion with fine needle aspiration showing the presence of numerous refractile hooklets suggesting hydatid disease. The same was confirmed both by serological evaluation and subsequent histopathological findings.  \nConclusion:  \nThis report highlights a unique presentation of hydatid cyst presenting as chronic sialadenitis, hitherto unreported in medical literature. Furthermore, it documents a safe diagnostic course employing cytology to diagnose atypical echinococcal infections.  \nKeywords: Hydatid cyst, Submandibular gland, Cytology  \nReceived date: 18 Nov 2024  \nAccepted date: 30 Apr 2025  \n*Please cite this article; Gaur K, Agarwal K, Bir Singh G, Kumar P, Krishna A. Hydatid Cyst Masquerading as Chronic Sialadenitis-An Extremely Rare Locale of Zoonotic Disease Demystified by Cytology. Iran J Otorhinolaryngol. 2025:37(6): 341-344. Doi:10.22038/ijorl.2025.81795.3829  \n1Assistant Professor, Lady Hardinge Medical College, Shaheed Bhagat Singh Marg, New Delhi, India.  \n2Department of Otorhinolaryngology & Head-Neck Surgery, Lady Hardinge Medical college, Shaheed Bhagat Singh Marg, New Delhi, India.  \n*Corresponding author:  \n2Department of Otorhinolaryngology & Head-Neck Surgery, Lady Hardinge Medical college, Shaheed Bhagat Singh Marg, New Delhi, [India. E-mail: gbsnit@yahoo.co.in](India. E-mail: gbsnit@yahoo.co.in)  \nIntroduction  \nHydatid cyst is a zoonotic disease and is recognized as a health problem of global prominence. It is endemic in sheep rearing countries such as Australia, New Zealand, Middle East as well as Latin America & the Far East (1). These cysts are mostly seen in the liver and lungs. The submandibular gland is a very rare site for this lesion (2-4) . With this background, we present a case of hydatid cyst in the submandibular gland, wherein the clinical presentation was found to be interesting and hitherto unreported in the medical literature. In addition, this report also highlights the importance of fine needle aspiration cytology (FNAC) in the diagnosis of parasitic infections with rare site predilection.  \nCase Report  \nA 35-year-old female reported to the ENT outpatient clinic with complaints of swelling in the left submandibular region for one month with clinical symptoms suggestive of sialadenitis. The patient had pain in the submandibular region along with submandibular swelling while chewing food for the past two months and the swelling persisted. On examination a welldefined swelling measuring 3 cm in greatest dimension was seen in the left submandibular region (Fig 1a) .  \nFig. 1a: Clinical photograph of the patient showing a submandibular swelling. b: CT scan image [axial cut] delineating the hydatid cyst  \nThe swelling was firm in consistency and nontender. It would be prudent to note that the swelling was bimanually palpable. The patient was further investigated on the lines of chronic  \nsialadenitis. Fine needle aspiration cytology (FNAC) and USG ","cbCailNbOst4Dgar","https://ap.wps.com/l/cbCailNbOst4Dgar","pdf",329299,"English","# Abstract\n# Introduction\n# Case Report\n# Discussion\n# Conclusion\n# Keywords","[{\"question\":\"Why was the hydatid cyst presentation clinically confusing in this case?\",\"answer\":\"It mimicked chronic sialadenitis, a comparatively innocuous condition, despite hydatid disease commonly involving the liver and lungs rather than the submandibular gland.\"},{\"question\":\"What diagnostic method provided the key cytology clue?\",\"answer\":\"Fine needle aspiration cytology (FNAC) showed numerous refractile hooklets, supporting hydatid disease.\"},{\"question\":\"How was the diagnosis confirmed after cytology?\",\"answer\":\"The presumptive diagnosis was supported by positive serological evaluation for Echinococcus and confirmed by subsequent histopathological findings.\"}]","Hydatid Cyst Masquerading as Chronic Sialadenitis - An Extremely Rare Locale of Zoonotic Disease Demystified by Cytology | PDF",1790741700]