vulvar leiomyoma

Based on the context provided, here's a summary of the description of vulvar leiomyoma:

Vulvar leiomyoma is a rare and benign lesion that can affect women of any age group. It is often misdiagnosed as a Bartholin cyst preoperatively.

Characteristics:

• Rare soft tissue tumor with only around 300 cases described in the literature
• Low incidence rate of just 0.03% of all gynecological tumors
• Usually arises from smooth muscle cells of the vulvar or dartos muscle
• Solitary, well-circumscribed, and slow-growing lesions
• Symptoms include sitting discomfort, difficulty urinating, pain, and difficulty walking

Types:

• Three principal histological patterns have been identified: spindled, epithelioid, and myxoid
• Leiomyoma is a benign mesenchymal tumor derived from smooth muscle

Incidence:

• Most commonly occur in the fourth and fifth decades of life
• Rare in vulva, vagina, cervix, broad ligament, ovary

Recurrence:

• Only 1 patient with leiomyoma had recurrence after 10 years
• Major diagnostic problem is the distinction between benign and malignant forms