Related Experiment Video
Updated: Jun 12, 2026

Generation of Lymph Node-fat Pad Chimeras for the Study of Lymph Node Stromal Cell Origin
Published on: December 16, 2013
[Progressive transformation of lymph node germinal centers: a case report and literature review.]
Chun-Ming Li1, Rui-Fang Yang, Wen-Yi Shen
1Department of Hematology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing 210029, China.
Objective:
To improve the understanding of progressive transformation of lymph node germinal centers (PTGC) and to explore its clinical, histopathologic and immunohistochemical features and the differential diagnosis between the related disease of germinal center hyperplasia.
Methods:
The clinical manifestation, laboratory bindings, treatment and outcome of a patient with PTGC were presented.
Results:
The main manifestation of the patient was painless peripheral lymphadenopathy. Histopathologic examination of an axillary lymph node showed reactive follicular hyperplasia and the progressive transformation changes germinal centers. The borderline between the germinal center and the mantle layer was obscured. The cells in the progressive transforming germinal centers were positive for CD20(+), CD5(+), CDw75(+).
Conclusion:
PTGC is a rare lymphoid disorder. Histopathology and immunohistochemistry are important basis of the diagnosis.
Related Concept Videos
Primary Lymphoid Organs
The red bone marrow is a soft, spongy tissue nestled in the interior of long bones such as the humerus and femur. It is the site...
Detailed Structure and Function of Lymph Nodes
From a histological perspective, lymph nodes can be split into two main areas: the superficial cortex and the deep medulla. The outer cortex is populated by dendritic cells, macrophages, and B lymphocytes, which are densely packed into follicles. When these B-lymphocytes are presented...
Secondary Lymphoid Organs
The spleen is a vital organ in the lymphatic system, nestled in the upper left side of the abdomen. It is composed of two primary regions: the red pulp and the white pulp, each having distinct functions. The red pulp performs a significant role in blood filtration. It efficiently purges the blood of old or damaged red blood cells and...
Development of the Lymphatic System
The first lymph sacs to form are the paired jugular lymph sacs located at the junction of the internal jugular and subclavian veins. From these sacs, lymphatic capillary plexuses extend to the thorax, upper limbs, neck, and head, eventually forming lymphatic vessels. Each jugular lymph sac maintains a...
Lymphoid Cells and Tissues
Lymphoid cells consist of various types of immune system cells. These include B and T lymphocytes, which are responsible for producing antibodies and killing infected cells, respectively. Dendritic cells act as messengers between the innate and adaptive...
Cells of the Adaptive Immune Response

