<unk> s, also known as Pilar<unk> s, arise from the arrectores pilorum muscles, and are made up of a poorly circumscribed proliferation of haphazardly arranged smooth muscle fibers located in the dermis that appear to infiltrate the surrounding tissue and may extend into the subcutis.
Sometimes associated with uterine<unk> s (a combination known as<unk><unk>  and uterine<unk> tosis, MCUL), these lesions may also be a manifestation of the hereditary<unk> tosis and renal cell cancer syndrome.
Multiple cutaneous leiomyoma
Adnexal and skin appendage neoplasms
Mammary adenosis
Trichoadenoma
Duct ectasia of breast
Chronic cystic mastitis
Carcinoma of the penis
Proliferating trichilemmal cyst