Related Experiment Video
Updated: May 5, 2026

Isolation of Human Lymphatic Endothelial Cells by Multi-parameter Fluorescence-activated Cell Sorting
Published on: May 1, 2015
A freely movable mucosa-associated lymphoid tissue lymphoma in the preaponeurotic space
Hiromichi Matsuda1, Yasuhiro Takahashi, Emiko Takahashi
1*Department of Ophthalmology, Aichi Medical University, Nagakute, Aichi, Japan; and †Department of Pathology, Aichi Medical University Hospital, Nagakute, Aichi, Japan.
Abstract:
A 70-year-old man presented with a painless, solitary mass in the left upper eyelid. The mass moved freely in the whole upper eyelid. MRI revealed a 15×10×5 mm sized, well-circumscribed mass in the space between the orbital septum and the levator aponeurosis. The tumor was removed en bloc via a skin crease approach with simultaneous bilateral ptosis repair. The immunohistopathological diagnosis was a mucosa-associated lymphoid tissue (MALT) lymphoma. This is the first case of a freely movable MALT lymphoma in the preaponeurotic space.
Related Concept Videos
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...
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...
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...
Appendicitis
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...

