Articles

  • Disease

    Ganglioneuroblastoma

    Ganglioneuroblastoma is an intermediate tumor that arises from nerve tissues. An intermediate tumor is one that is between benign (slow-growing and unlikely...

  • Disease

    Glomus jugulare tumor

    A glomus jugulare tumor is a tumor of the part of the temporal bone in the skull that involves the middle and inner ear structures. This tumor can affect the...

  • Disease

    Glomus tympanum tumor

    A glomus tympanum tumor is a tumor of the middle ear and bone behind the ear (mastoid).

  • Disease

    Glucagonoma

    Endocrine glands release hormones (chemical messengers) into the bloodstream to be transported to various organs and tissues throughout the body. For instance, the pancreas secretes insulin, which allows the body to regulate levels of sugar in the blood. The thyroid gets instructions from the pituitary to secrete hormones which determine the pace of chemical activity in the body (the more hormone in the bloodstream, the faster the chemical activity; the less hormone, the slower the activity).

    Glucagonoma is a very rare tumor of the islet cells of the pancreas, which leads to an excess of the hormone glucagon in the blood.

  • Disease

    Graft-versus-host disease

    Antigens are large molecules (usually proteins) on the surface of cells, viruses, fungi, bacteria, and some non-living substances such as toxins, chemicals, drugs, and foreign particles. The immune system recognizes antigens and produces antibodies that destroy substances containing antigens.

    Graft-versus-host disease (GVHD) is a complication that can occur after certain stem cell or bone marrow transplants.