Hassall's Corpuscle

**Semantic type:** Body Part, Organ, or Organ Component

**Definition:** A small spherical body composed of keratinized squamous epithelial cells arranged in a concentric pattern in the medullary portion of the thymus.

**Synonyms:** - Hassall's Body - Hassall's Concentric Corpuscle - Thymic Corpuscle - Virchow-Hassall Body