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Intermammary pilonidal sinus: A case report of a 23-year-old girl

Pilonidal sinus is a chronic inflammatory disease of the skin and subcutaneous tissue, a cyst filled with a ball of hair, characterized by a discharging sinus and abscess. The disease is typically seen in the sacrococcygeal region. However, it can occur in other areas, such as the occiput, nose, neck, intermammary (sternal) area, axilla, finger (interdigital area), groin or external genital area. In this case report, an intermammary (sternal) pilonidal sinus, which is rarely seen, was presented along with the literature.