A linear verrucous lesion on the left gluteal region of a child
Abstract
Introduction: Syringocystadenoma papilliferum is a benign tumor of apocrine or eccrine differentiation.1 While these lesions usually occur at birth and appear on the head and neck2, we present a case of a 10 year old female with a syringocystadenoma papilliferum along the left lateral gluteal region.
Case Information: A 10-year-old female presented with a verrucous plaque in a linear distribution along the left lateral aspect of the gluteal region. The patient appeared healthy, alert, and oriented with no atypical vitals. The lesion has been present since birth.
Discussion/Clinical Findings: Microscopic sections display a papillary and superficial reticular dermis permeated by inter-anastomosing sweat ducts surrounded by a bilayer of cuboidal epithelial cells. The sweat ducts connect directly to the epidermis. Additional observations include an inflammatory infiltrate of lymphocytes and plasma cells. Hyperkeratosis, parakeratosis, papillomatosis, and acanthosis with a granular layer are also present.
Conclusion: Our case reports a unique presentation of a syringocystadenoma papilliferum. Histopathological examination shows sweat ducts connected directly to the epidermis in addition to a bilayer of epithelial cells, confirming the diagnosis. This case demonstrates the atypical location of a benign skin lesion and serves as a learning instrument in identifying differential diagnosis of linear verrucous lesions on the body.