Skin, Pilar cyst [LMP78550]

LMP78550 Thumbnail
View the Zoomify Image
Image Details
Diagnostic Modality: 
Whole Slide Image
Disease Category: 
Neoplasia
Diagnosis: 
Pilar cyst
Species: 
Human
Organ System: 
Skin
Gender: 
Male
Age: 
80 years
Diagnosis Code: 
ICD-10: L72.1
Slide Contributor Information
Yoon, J., Al-Habeeb, A.

Keywords

Pilar cyst

Clinical History

80-year old patient with scalp lesion.

Clinical Discussion

Pilar cysts are common, benign cutaneous lesions. Proliferating or malignant cysts may arise from these lesions, albeit rarely. Simple excision usually suffices for these generally asymptomatic lesions.

The cyst is lined by squamous epithelium and is lacking the granular layer. In contrast, the granular layer is intact in epidermoid cysts.