50.5 MB (2.3 MB compressed)
5157 x 3425 pixels
43.7 x 29.0 cm ⏐ 17.2 x 11.4 in (300dpi)
DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
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Swollen lymph gland at the base of a 62-year-old man's neck. This condition is also called lymphadenopathy. The glands are lymph nodes, regions of the body at which white blood cells aggregate. These cells are a major part of the immune system, and during infections the lymph nodes may swell up and become tender. This response was due to a mediastinal neuroendocrine tumour. This is a cancer of the interface between the nervous and hormonal systems, which is located in the mediastinum (chest cavity).
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