### condition | illness | tumor:

Larger tumor
* are more likely to be malignant.
* behave more aggressively than smaller tumors.
* can compress the brain itself.

### condition | illness | tumor:

Lipoma
* are always benign
  - benign tumors composed of mature fat cells
* are benign tumors of fat cells commonly found under the skin in dogs
  - uncommonly found under the skin in cats
* are common benign tumors derived from the lipocyte cell line
  - subcutaneous fatty tumors
  - diseases
* are fatty lumps often found on middle-aged dogs
  - tumors common in older horses
  - more common in women and tend to appear on the forearms, torso, and back of the neck
  - quite common in older dogs
  - round or oval lumps under the skin caused by fatty deposits
* develop as single, painless lumps.
* differ biochemically from normal mature fat.
* have increased levels of lipoprotein lipase.

Liver tumor
* are rare, but can occur.
* can develop anywhere body of the liver
  - produce different echoes from normal liver tissue

Malignant neoplasm
* are referred to as cancer
  - uncommon in younger women but become more frequent with increasing age
* is malignancy
  - the dangerous neoplasm

### condition | illness | tumor:

Malignant tumor
* Most malignant tumors are highly glucose avid.
* are actually in the breast tissue itself
  - another example
  - cancerous and benign tumors are non-cancerous
  - cancers that can invade and damage nearby tissues and organs
* are more dangerous, and survival times can range from six months to several years
  - rare and are found in many stages of malignancy
  - most commonly basal cell skin cancer, squamous cell skin cancer and melanoma
  - the privilege of the wife
* are usually cancerous and very dangerous
  - more oddly-shaped and more firmly attached
  - very often life-threatening illnesses
* can invade surrounding tissues and spread to other parts of the body.
* cause progressive weakness, weight loss, and cachexia.
* contain cancer cells
  - cells that have the ability to metastasize
* do uniformly badly.
* grow quickly and can spread to surrounding tissues
  - rapidly and are life threatening
* have a specific capacity to invade and destroy the underlying mesenchyme.
* penetrate and destroy healthy body tissues.
* require treatment.

Mammary tumor
* are common in mice.
* grow unpredictably in size in dogs.
* occur commonly in older, intact female dogs.

Meningioma
* Most meningiomas are benign and malignant meningiomas are extremely rare
  - surgically curable
  - spherical masses, with broad implantation on the underlying dura mater
  - have a firm consistency
  - occur in the brain
* Some meningiomas are classified as atypical.
* are diseases
* arise from arachnoid cells
  - cells in the membranes that surround the brain and spinal cord
* come from the brain coverings, the meninges.

Metastatic tumor
* appear as dark grey circles, which are readily apparent in the untreated mouse.
* are more common
  - likely to grow in some parts of the body than in others
* are the most common brain tumor discovered each year
  - ocular neoplasms, more common than uveal melanomas
* form when large progressive tumors shed tumor cells.
* have a better detection rate than primary tumors.
* retain the primary tumor's tissue type.

### condition | illness | tumor | metastatic tumor:

Retinoblastoma
* arises when loss of function of both alleles of the gene in a retinoblast occurs.
* can appear in one or both eyes
  - show up in several ways
* is cancer of the retina, the eye's light-sensitive tissue.
* means tumours in the retina.
* normally keeps the cell from growing too fast or responding to growth stimulators.

Myoma
* Many myomas are asymptomatic.
* are sensitive to estrogen and progesterone.
* is benign tumors.

Neuroendocrine tumor
* Some neuroendocrine tumors start in endocrine organs like the thyroid gland.
* contain a high density of somatostatin receptors.