It is one common source of appendicitis, as it may cause an obstruction of the appendiceal lumen, resulting in the subsequent filling of the appendix with mucus, causing it to distend and internal pressure to increase. Other rare case reports describe upper airway obstruction and systemic autoimmune disease.
Lymphoid hyperplasia
Lymphoepithelial lesion
Follicular hyperplasia
Neuroendocrine hyperplasia
Duodenal lymphocytosis
Ectopic salivary gland tissue
Cutaneous lymphoid hyperplasia
Ectoparasitic infestation