Overview
Hyalinizing clear cell carcinoma (HCCC) is a rare neoplasm originating from minor salivary glands, typically affecting the tongue base. It presents as a clear cell lesion that requires differentiation from other salivary gland tumors and metastatic clear cell renal carcinoma 2.Diagnosis
Clinical Presentation: Often clinically misdiagnosed, as seen in a case diagnosed initially as fibroma 2.
Histopathological Examination: Characterized by infiltrating lesions predominantly composed of clear cells 2.
Differential Diagnosis: Includes other salivary gland lesions with clear cell components and metastatic clear cell renal carcinoma 2.
Immunohistochemistry: Essential for distinguishing HCCC from other clear cell lesions 2.
Imaging: Used to rule out primary sites like the kidney; no specific imaging criteria mentioned 2.Management
Primary Treatment: Wide excision is recommended as adequate treatment 2.
Adjuvant Therapy: Not indicated based on the case presented; no further therapy given beyond surgery 2.
Follow-Up: Regular follow-up is advised to monitor for recurrence 2.Special Populations
Elderly: Case reported in a 73-year-old patient with successful surgical management and no recurrence at one-year follow-up 2.Key Recommendations
Perform wide excision for definitive treatment of hyalinizing clear cell carcinoma (Evidence: Moderate 2).
Utilize immunohistochemistry to differentiate HCCC from other clear cell lesions (Evidence: Moderate 2).
Implement regular follow-up post-surgery to monitor for recurrence, especially in elderly patients (Evidence: Expert opinion 2).References
1 Clark D. Quality improvement in basic histotechnology: the lean approach. Virchows Archiv : an international journal of pathology 2016. link
2 Masilamani S, Rao S, Chirakkal P, Kumar AR. Hyalinizing clear cell carcinoma of the base of tongue: a distinct and rare entity. Indian journal of pathology & microbiology 2011. link