Malignant Fibrous Histiocytoma in Deep  Lobe of Parotid Gland � A Rare Case Report

Dr Manas Ranjan Rout; Dr K Susritha; Dr B. E. S Jyothi

Volume : II, Issue : VI, June - 2013

Malignant Fibrous Histiocytoma in Deep Lobe of Parotid Gland � A Rare Case Report

Dr Manas Ranjan Rout, Dr K Susritha, Dr B. E. S Jyothi

Abstract :

Fious histiocytoma is a tumor of biphasic cell population of fioblasts and histiocytes. It usually occurs in the sun exposed skin and orbital tissue. But it has also been found in the upper aerodigestive tract, salivary gland, deep layers of scalp and face. Fious histiocytoma of parotid gland is extremely rare. It must be distinguished from other spindle cell tumors of parotid gland, particularly those of epithelial and myoepithelial origins. In immunohistochemical studies, antibody markers against vimentin and smooth muscle-specific actin lead to the diagnosis of Fious histiocytoma. The malignant Fious histiocytoma can be differentiated by its histopathology. It consists of pleomorphism of cells, abundant mitotic figure, atypical mitosis and other tissue invasion. The clinical features such as rapid growth and distant organ metastasis allow a diagnosis of malignant variants. Treatment of benign Fious histiocytoma can be made by a wide local excision without sacrificing near organs. In the present case tumor involves the deep lobe of parotid gland with some interesting manifestations which decreased after the removal of tumor and total parotidectomy. As it is diagnosed to be malignant we planned radiotherapy to prevent the recurrence.