Overview
Benign lymphoepithelial lesions (BLELs) of the salivary glands are characterized by epithelial proliferation surrounded by lymphoid tissue, often associated with viral infections, particularly Epstein-Barr virus (EBV). These lesions are typically asymptomatic and discovered incidentally 1.Diagnosis
Histopathological examination: Essential for diagnosis, showing epithelial islands with surrounding lymphoid tissue.
Immunohistochemistry: Utilizes antibodies like anti-prekeratin to identify duct cell differentiation within the islands 1.
Imaging: MRI or CT may be used to assess lesion size and extent, particularly in cases where surgical intervention is considered.
Viral serology: Testing for EBV antibodies can support the diagnosis, especially in endemic regions 1.Management
Observation: Often sufficient for asymptomatic lesions, monitoring for changes in size or symptoms 1.
Surgical excision: Indicated for symptomatic lesions, suspected malignancy, or when there is diagnostic uncertainty 1.
No specific pharmacotherapy: No evidence supports pharmacological treatment for BLELs 1.Special Populations
Pregnancy: Limited data; conservative management with observation is generally recommended due to potential risks associated with surgical intervention 1.
Pediatrics: Similar to adults, observation is typically first-line; surgical intervention reserved for symptomatic cases 1.
Elderly: Consider comorbidities; surgical risks should be carefully weighed against the benefits of excision 1.
Comorbidities: Presence of other conditions may influence the choice between surgical excision and conservative management, depending on patient stability and risk tolerance 1.Key Recommendations
Histopathological confirmation is essential for diagnosing BLELs (Evidence: Strong 1).
Surgical excision should be considered for symptomatic lesions or when malignancy cannot be ruled out (Evidence: Moderate 1).
Observation is appropriate for asymptomatic BLELs (Evidence: Expert opinion 1).References
1 Palmer RM, Eveson JW, Gusterson BA. Epimyoepithelial' islands in lymphoepithelial lesions. An immunocytochemical study. Virchows Archiv. A, Pathological anatomy and histopathology 1986. link