Histology Course A IV 21 Department of Pathology, University of Zurich Histokurs

A IV 21 thymus: severe combined immunodeficiency (SCID) HE  
  ICD-10: D81
2 3/12-year-old boy succumbed to fungal sepsis (specimen from autopsy).
- The thymus is small for the age of the patient (hypoplasia).
- Distinct fibrosis of the thymus. The parenchyma is scant and harbours only few lymphocytes.
- Cortex and medulla can not be distinguished
- Of note, in the upper section a parathyroid gland is included.