Proliferating trichilemmal cyst | |
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Other names | Pilar tumor, proliferating follicular cystic neoplasm, proliferating pilar tumor, and proliferating trichilemmal tumor |
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Proliferating tricholemmal (pilar) cyst | |
Specialty | Dermatology |
Proliferating trichilemmal cysts, also known as a pilar tumor, proliferating follicular cystic neoplasm, proliferating pilar tumor, and proliferating trichilemmal tumor [1] is a cutaneous condition characterized by proliferations of squamous cells forming scroll-like structures. [1] [2]: 678
The tumors, which are typically found in regions like the scalp with a high density of hair follicles, can be solid or solid cystic. Proliferating trichilemmal cyst frequently manifests clinically as a subcutaneous nodule that gradually grows into a big nodular mass. Rapid growth in some cases may be a sign of malignant development into cancer. [3]
Histologically, Proliferating trichilemmal cysts are distinguished by trichilemmal keratinization, which is the sudden change from nucleated epithelium to anucleated keratinized cells without a granular layer. [4] The differential diagnosis include trichilemmal cyst and Turban tumor. [5]
Surgical excision is the treatment of choice for proliferating trichilemmal cysts. [4]
Proliferating trichilemmal cysts make up 0.1% of all skin tumors. [4] Most patients with these tumors are older women, and 90% of patients with these lesions appear on the scalp. [6]
Proliferating trichilemmal cyst | |
---|---|
Other names | Pilar tumor, proliferating follicular cystic neoplasm, proliferating pilar tumor, and proliferating trichilemmal tumor |
| |
Proliferating tricholemmal (pilar) cyst | |
Specialty | Dermatology |
Proliferating trichilemmal cysts, also known as a pilar tumor, proliferating follicular cystic neoplasm, proliferating pilar tumor, and proliferating trichilemmal tumor [1] is a cutaneous condition characterized by proliferations of squamous cells forming scroll-like structures. [1] [2]: 678
The tumors, which are typically found in regions like the scalp with a high density of hair follicles, can be solid or solid cystic. Proliferating trichilemmal cyst frequently manifests clinically as a subcutaneous nodule that gradually grows into a big nodular mass. Rapid growth in some cases may be a sign of malignant development into cancer. [3]
Histologically, Proliferating trichilemmal cysts are distinguished by trichilemmal keratinization, which is the sudden change from nucleated epithelium to anucleated keratinized cells without a granular layer. [4] The differential diagnosis include trichilemmal cyst and Turban tumor. [5]
Surgical excision is the treatment of choice for proliferating trichilemmal cysts. [4]
Proliferating trichilemmal cysts make up 0.1% of all skin tumors. [4] Most patients with these tumors are older women, and 90% of patients with these lesions appear on the scalp. [6]