Table 1 Differences between real cysts and pseudocysts in metastatic lymph nodes
From: Mechanisms of cyst formation in metastatic lymph nodes of head and neck squamous cell carcinoma
Cavity | prevalence | Lumen content | CK7 Expression | Mechanism of formation |
|---|---|---|---|---|
Pseudocysts | Majority of cases | keratin and cellular debris | Negative | Degradation of keratin and cellular debris/Sudden blockage of lymphatic fluid flow |
True cysts | Few cases | eosinophilic fluid | Positive | Origination from transformed keratinocytes/ducts of submucosal salivary glands |