The spleen has the same relationship to the circulatory system that the lymph nodes have to the lymphatic system. A wide range of diseases can affect the spleen. Pathologic conditions of the spleen can be classified into the following categories: congenital diseases (accessory spleen, polysplenia, and asplenia); trauma; inflammation (abscess, candidiasis, histoplasmosis, and sarcoidosis); vascu...

Most of the information accumulated about the small lymphocyte has concerned the association of this cell with immune reactions in general and the rapid recirculation of lymphocytes from blood to lymph, probably by way of the lymph nodes.`' It seemed reasonable to suppose that a relationship might exist between these two activities and that perhaps one was necessary for the fulfillment of the o...

discoidin domain receptor (ddr) is a new member of the receptor tyrosine kinase family. there are two isoforms of discoidin domain receptor (ddr), ddr1 and ddr2. these receptors play a major role in the adhesion, motility and cell proliferation. due to the important role of ddr2 in the development of tumor extension, this receptor is pivotal in the field of carcinogenesis. the aim of this study...

BACKGROUND Yersinia pseudotuberculosis generally infects the gastrointestinal tract and causes enteropathy symptoms suggesting infection. Y. pseudotuberculosis infections are often complicated with intraceliac lymphoadenopathy mimicking malignant lymphoma. This is a first case of Yersinia pseudotuberculosis enteropathy mimicking enteropathic γδ T-cell lymphoma. This case highlighted the γδ T-ce...

Four poorly differentiated malignant lesions occurred in a 60-year-old Chinese male in the nasal cavity, submandibular gland, a lymph node in the neck, and the mandible. These malignant lesions developed within an 8-year period and each showed distinctive histological features. Among these malignant lesions, the neoplasm in the submandibular gland presented variegated histological and immunohis...

Intracellular parasites are known to persist lifelong in mammalian hosts after the clinical cure of the disease, but the mechanisms of persistence are poorly understood. Here, we show by confocal laser microscopy that in the draining lymph nodes of mice that had healed a cutaneous infection with Leishmania major, 40% of the persisting parasites were associated with fibroblasts forming the retic...

The thymus, spleen, and lymph nodes were studied in runt disease induced by a graft of intravenously injected homologous splenic cells into newborn rats and mice. Adult Long-Evans cells (70 x 10(6)) were injected into Sprague-Dawley rats. Adult DBA cells (7 x 10(6)) were injected into C57BL/6 mice. Runted rats were sacrificed at 14 to 28 days of age; mice at 10 to 20 days. The thymic cortex is ...

PURPOSE In this study, we examined whether additional, delayed regional FDG PET scans could increase the accuracy of the lymph node staging of NSCLC patients. MATERIALS AND METHODS Among 87 patients who underwent open thoracotomy or mediastinoscopic biopsy under the suspicion of NSCLC, 35 (32 NSCLC and 3 infectious diseases) who had visible lymph nodes on both preoperative whole body scan and...