Dry Crusty Nose: Not Just Rhinosinusitis! Hidden IgG4-related Disease Without IgG4 Level Rise. 

 -  2024 
<br/><br/> IgG4-related disease (IgG4-RD) is a fibro-inflammatory condition that can affect various organs. Localized sinonasal IgG4-RD is a rare condition characterized by bone and soft-tissue invasion. In this report, we present a case of a patient initially diagnosed with chronic rhinosinusitis, who underwent endoscopic sinus surgery and was later found to have biopsy proven IgG4-related sinonasal disease despite having normal serum levels of IgG4, resulting in erosion of the right lamina papyracea. Copyright © 2024 Greater Baltimore Medical Center. 
<br/><br/><br/>English 
<br/><br/><label>ISSN: </label>2000-9666 
<br/><br/><label>Standard No.: </label>jchim-14-03-113 [pii] PMC11259488 [pmc] 
<br/><br/><label>Subjects--Topical Terms: </label>--Automated
<br/><br/><label>Subjects--Geographic Terms: </label><br/>MedStar Union Memorial Hospital
<br/><br/><label>Index Terms--Occupation: </label><br/>Hospitalist<br/>Internal Medicine Residency
<br/><br/><label>Index Terms--Function: </label><br/>Case Reports<br/>Journal Article