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Educational Articles

Tumors

  • This slow-growing tumor is a disordered overgrowth of cells of the epidermis, or outer layer of skin. It gets its name from its resemblance under the microscope to the basal cell layer of epithelium.

  • This is one of many similar tumors that arise by disordered growth of the hair follicles. Almost all of these tumors are benign and can be permanently cured by total surgical removal.

  • Melanocytes are cells that produce a pigment called melanin. They are found in many parts of the body where there is pigment, particularly skin, hair and eyes.

  • This tumor is a disordered and purposeless overgrowth of sebaceous gland cells. These glands are attached to the hair follicles where their function is to lubricate the hairs and skin.

  • This is a malignant tumor of skin epidermal cells with varying degrees of differentiation (resemblance to normal, non-cancerous cells). Tumors of this type occur in people and all domestic species.

  • The spleen is an abdominal organ located near the stomach. The spleen contains two types of tissue, red pulp and white pulp.

  • This is a malignant tumor of skin epidermal cells with varying degrees of differentiation (resemblance to normal, non-cancerous cells). Tumors of this type occur in people and all domestic species.

  • Tumors of the epithelial, glandular stomach lining include non-cancerous polyps and some types of chronic (hyperplastic) gastritis. Malignant epithelial tumors (gastric adenocarcinomas) cause progressive illness.

  • The testicle or testis contains several different cell types. These include the germ cells, which make sperm, the supporting and nourishing Sertoli cells, and the hormone-producing interstitial (or Leydig) cells.

  • The thyroid gland is a two-lobed endocrine gland wrapped partially around the front of the trachea (windpipe) just below the throat. Its function is the production and release of thyroid hormones.