Proliferating trichilemmal cyst
Proliferating trichilemmal cyst
Definition
Proliferating trichilemmal tumor is a rare large, multinodular, usually benign, tumor that is generally located in the posterior part of the scalp in aged women (over 50 years). It first appears as a painless nodule that later grows into a solid or partially cystic tumor that is mobile over the underlying subcutaneous tissues. It can present ulceration, inflammation or even bleeding and can cause necrosis of the adjacent tissues.
Also known as Pilar cyst, Pilar tumor, Pilar tumour, proliferating Pilar tumor, proliferating Pilar tumour, proliferating trichilemmal tumor, proliferating trichilemmal tumour, proliferating Tricholemmal tumor, proliferating Tricholemmal tumour — per MONDO
Also identified as
Affected Organs
| Organ | Involvement | Source |
|---|---|---|
| Exocrine system | Disease Has Primary Anatomic Site | NCIT · CC BY 4.0 |
| Hair | Disease Has Primary Anatomic Site | NCIT · CC BY 4.0 |
| Hair follicles | Disease Has Primary Anatomic Site | NCIT · CC BY 4.0 |
| Head | Disease Has Primary Anatomic Site | NCIT · CC BY 4.0 |
| Integumental system | Disease Has Associated Anatomic Site | NCIT · CC BY 4.0 |
| Skin of body | Disease Has Associated Anatomic Site | NCIT · CC BY 4.0 |
| Skin of body | Disease Has Primary Anatomic Site | NCIT · CC BY 4.0 |