Malignant proliferating trichilemmal tumor of the scalp: a case report.
BACKGROUND
Malignant proliferating trichilemmal tumor is a rare skin tumor that affects mainly older women. It mimicks differential squamous cell carcinoma and its biological behavior is unpredictable.


OBJECTIVE
To report on a new case of malignant proliferating trichilemmal tumor of the scalp and to describe the clinical and histopathologic findings.


METHODS
A tumor measuring 2 cm was surgically excised with a 0.5 cm conservative margin of normal tissue


RESULTS
Based on the histopathologic findings of tumor, this case was diagnosed as proliferating trichilemmal tumor of the scalp. Eleven months after tumor resection, the patient is free of disease.


CONCLUSIONS
Malignant proliferating trichilemmal tumor is a rare malignant lesion with an unpredictable biological behavior. After wide excision, long term clinical follow up of the patient for early diagnosis of metastases is judicious.
Trabelsi
Amel
A
Department of Pathology, Farhat Hached hospital, Sousse, Tunisia. trabelsiamel@yahoo.fr
Stita
Wided
W
Gharbi
Olfa
O
Kanani
Nesrine
N
Sriha
Badreddine
B
Korbi
Sadok
S
D000368:Aged; D002277:Carcinoma / Q000175:diagnosis; D002455:Cell Division; D003937:Diagnosis, Differential; D005260:Female; D006258:Head and Neck Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D006801:Humans; D015603:Keratinocytes / Q000473:pathology; D018295:Neoplasms, Basal Cell / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D012535:Scalp / Q000473:pathology*; D012878:Skin Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery