Syringocystadenoma Papilliferum: A Challenging Clinical Diagnosis in a Patient With a Persistent Scalp Lesion After Trauma

Syringocystadenoma papilliferum is a rare, hamartomatous benign tumor originating from either the eccrine or apocrine sweat glands. We report a case of a 30-year-old female who presented with a 10-year history of an asymptomatic, slow-growing scalp lesion following head trauma. A scalp examination revealed a single, rounded 3 mm fleshy erythematous nodule with a central crust in the right parietal area. a biopsy revealed downward papillomatous extensions in the epidermis and multiple epithelial sheets with dilated ducts lined by columnar cells in the dermis. A diagnosis of syringocystadenoma papilliferum was confirmed based on these clinicopathological findings. The patient was reassured and underwent complete surgical excision of the lesion.