Cutaneous adnexal tumours are numerous types of benign and malignant tumours that arise from:
Adnexal tumours may be sporadic but are sometimes due to syndromes, such as:
Benign eccrine and apocrine tumours include:
- Cylindroma and spiradenoma
- Cutaneous mixed tumor
- Syringocystadenoma papilliferum
- Hidradenoma papilliferum
- Tubular/papillary adenoma, including papillary cystadenoma.
Malignant eccrine and apocrine tumours include:
- Adenoid cystic carcinoma
- Mucinous carcinoma
- Microcystic adnexal carcinoma
- Digital papillary adenocarcinoma
- Extramammary Paget disease.
Benign follicular tumours include:
- Trichoblastoma and trichoepithelioma
- Trichodiscoma and fibrofolliculoma
- Tumour of the follicular infundibulum
- Proliferating trichilemmal tumour.
Malignant follicular tumours include:
- Trichoblastic carcinoma
- Trichilemmal carcinoma
- Pilomatrix (matrical) carcinoma.
Sebaceous tumours include: