Pilar cyst on the dorsum of hand: A case report and review of literature.

RATIONALE Pilar cyst mainly occurs on the scalp, but pilar cyst on the dorsum of hand has not been reported. Herein, we provide information to improve the clinical cognition of pilar cyst location. PATIENTS CONCERNS A 76-year-old man presented with a round nodule on the opisthenar of his right hand for two months without any subjective symptoms. DIAGNOSES Histological features of the lesion biopsy indicated the diagnosis of pilar cyst. INTERVENTIONS Surgical resection was made under local anesthesia. OUTCOMES Complete recovery was achieved after surgery. CONCLUSION Pilar cyst rarely occurs on the dorsum of hand and its diagnosis depends on histopathological examinations. Surgical resection is the only way to treat it.