Wenter, V.* ; Albert, N.L.* ; Ahmaddy, F.* ; Unterrainer, M.* ; Hornung, J.* ; Ilhan, H.* ; Bartenstein, P.* ; Spitzweg, C.* ; Kneidinger, N. ; Todica, A.*
     
    
        
The diagnostic challenge of coexistent sarcoidosis and thyroid cancer - a retrospective study.
    
    
        
    
    
        
        BMC Cancer 21:139 (2021)
    
    
    
      
      
	
	    BACKGROUND: Sarcoid lesions may mimic metastatic disease or recurrence in thyroid cancer (TC) patients as both diseases may affect the lungs and lymph nodes. We present the first study to systematically evaluate the clinical course of patients with (TC) after adjuvant radioactive iodine therapy (RIT) and concomitant sarcoidosis of the lung or the lymph nodes. METHODS: We screened 3285 patients and retrospectively identified 16 patients with TC (11 papillary thyroid cancer (PTC), 3 follicular thyroid cancer (FTC), 1 oncocytic PTC, 1 oncocytic FTC) and coexisting sarcoidosis of the lung and/or the lymph nodes treated at our institute. All patients had undergone thyroidectomy and initial adjuvant RIT. Challenges in diagnosing and the management of these patients were evaluated during long term follow-up (median 4.9 years (0.8-15.0 years)). RESULTS: Median age at first diagnosis of TC was 50.1 years (33.0-71.5 years) and of sarcoidosis 39.4 years (18.0-63.9 years). During follow-up, physicians were able to differentiate between SA and persistent or recurrent TC in 10 of 16 patients (63%). Diagnosis was complicated by initial negative thyroglobulin (Tg), positive Tg antibodies and non-specific imaging findings. Histopathology can reliably distinguish between SA and TC in patients with one suspicious lesion. CONCLUSION: Physicians should be aware of the rare coexistence of sarcoidosis and TC. Lymphadenopathy and pulmonary lesions could be metastases, sarcoidosis or even a mix of both. Therefore, this rare patient group should receive a thorough work up including histopathological clarification and, if necessary, separately for each lesion.
	
	
	    
	
       
      
	
	    
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        Publication type
        Article: Journal article
    
 
    
        Document type
        Scientific Article
    
 
    
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        Keywords
        Radioiodine Therapy ; Sarcoidosis ; Thyroid Cancer ; Thyroid Gland
    
 
    
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        Language
        english
    
 
    
        Publication Year
        2021
    
 
    
        Prepublished in Year
        
    
 
    
        HGF-reported in Year
        2021
    
 
    
    
        ISSN (print) / ISBN
        1471-2407
    
 
    
        e-ISSN
        1471-2407
    
 
    
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	    Volume: 21,  
	    Issue: 1,  
	    Pages: ,  
	    Article Number: 139 
	    Supplement: ,  
	
    
 
    
        
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            Publisher
            BioMed Central
        
 
        
            Publishing Place
            Campus, 4 Crinan St, London N1 9xw, England
        
 
	
        
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        Reviewing status
        Peer reviewed
    
 
     
    
        POF-Topic(s)
        30202 - Environmental Health
    
 
    
        Research field(s)
        Lung Research
    
 
    
        PSP Element(s)
        G-501600-001
    
 
    
        Grants
        Projekt DEAL
Bavarian Equal Opportunities Sponsorship (BGF)
    
 
    
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        Erfassungsdatum
        2021-04-15