Cases
50-year-old man with painful solitary nodule   

Findings and diagnosis

Findings

Microscopic exam showed within the dermis well-circumscribed nodules composed of basaloid cells arranged around small ducts and surrounded by homogeneous pink material.

Differential diagnosis

  • Cylindroma
  • Basal cell carcinoma
  • Poroma
  • Spiradenocarcinoma
  • Spiradenoma

Diagnosis: Spiradenoma