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Article
December 1980

Giant Pilar Tumor of the Scalp

Author Affiliations

From Hospital Naval Central, Buenos Aires.

Arch Dermatol. 1980;116(12):1395. doi:10.1001/archderm.1980.01640360069021
Abstract

Tn 1971, Dabska1 reported 12 cases of giant hair matrix tumors. We report here a case in which the tumor reached an unusually large size.

Report of a Case  A 58-year-old woman had a large, progressively growing tumor. It had been present for the past seven years and covered the whole scalp like a turban. On examination, the lesion was seen to be lobulated, pink-yellow, and foul smelling (Fig 1). It was 25 × 20 × 5 cm. There were no palpable regional lymph nodes.No notable abnormalities were found on roentgenographic examination of the skull and chest.

Histopathologic Findings  A biopsy specimen obtained at another medical institution was interpreted as being consistent with squamous cell carcinoma. The slides were sent to us for examination. The specimen showed a proliferative epithelial process containing large eosinophilic cells with central oval nuclei and prominent nucleoli. Some pleomorphism was observed, and there

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