Lymphoid thymic hyperplasia

Lymphoid thymic hyperplasia, also referred to as lymphoid follicular thymic hyperplasia or autoimmune thymitis, is a form of thymic hyperplasia


Unlike in true thymic hyperplasia, there is a presence of an increased number of lymphoid follicles.


This condition is most commonly associated with conditions, such as:

Radiographic features


Some publications (with small sample sizes) suggest that CT attenuation of lymphoid hyperplasia can be significantly higher than that of true hyperplasia, with the optimal threshold of around 40 HU useful for differentiating lymphoid hyperplasia from true thymic hyperplasia 3.

Article information

rID: 65682
System: Chest
Synonyms or Alternate Spellings:
  • Tymic follicular hyperplasia
  • Thymic lymphofollicular hyperplasia
  • Lymphofollicular hyperplasia of thymus
  • Follicular hyperplasia of thymus

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