Solitary lymphatic nodule

The Solitary lymphatic nodules (or solitary follicles) are structures found in the small intestine and large intestine.

Solitary lymphatic nodule
Transverse section of human vermiform process. X 20. (Lymph nodule labeled at bottom right.)
Section of mucous membrane of human rectum. X 60. (Solitary lymphatic nodule labeled at bottom center.)
Details
Identifiers
Latin	Noduli lymphoidei solitarii
TA	A05.6.01.013
FMA	76465
Anatomical terminology

Small intestine

The solitary lymphatic nodules are found scattered throughout the mucous membrane of the small intestine, but are most numerous in the lower part of the ileum.

Their free surfaces are covered with rudimentary villi, except at the summits, and each gland is surrounded by the openings of the intestinal glands.

Each consists of a dense interlacing retiform tissue closely packed with lymph-corpuscles, and permeated with an abundant capillary network.

The interspaces of the retiform tissue are continuous with larger lymph spaces which surround the gland, through which they communicate with the lacteal system.

They are situated partly in the submucous tissue, partly in the mucous membrane, where they form slight projections of its epithelial layer.

Large intestine

The solitary lymphatic nodules of the large intestine are most abundant in the cecum and vermiform process, but are irregularly scattered also over the rest of the intestine.

They are similar to those of the small intestine.

References

This article incorporates text in the public domain from page 1176 of the 20th edition of Gray's Anatomy (1918)