True Trichilemmal Cyst or Pilar Cyst: A Case Report

Introduction: Trichilemmal cyst is one of the most common cutaneous cyst occurring on the scalp. It is seen more frequently in females, originated from the outer root sheath of the hair follicle. Case report: A 65 years old male patient reported with a complaint of swelling on the right side of the cheek. On clinical, histopathological examination, we concluded as a trichilemmal cyst. Management: Lesion was surgically excised in toto under local anesthesia and the specimen was sent for histopathological examination Conclusion: Trichilemmal cyst (TC) occurs more commonly on the scalp region, affecting female more commonly than male, which should be diagnosed as earlier or it might proliferate and convert into the malignant proliferating trichilemmal tumor (MPTT) which is a malignant counterpart of the trichilemmal cyst. The epidermoid cyst should be differentiated from trichilemmal cyst by having prominent granular cell layer in the epidermis which is lacking in the trichilemmal cyst. Epidermoid cyst originates from entrapped pluripotent cells or implanted epithelium. Our case report is a rare case because here the site of the lesion is cheek and seen in the male patient.