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This is a tumour originating from the dog's mast cells. These tumours include both benign (relatively harmless) and highly malignant (more dangerous and spreading) types.
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There are two main types of internal (visceral) mast cell tumours, one originating in the blood forming (haemopoietic) organs, such as the spleen and bone marrow, and the other originating in the gut (usually the intestine but occasionally the stomach).
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This condition results from dilation or paralysis of the oesophagus or tube which connects the mouth with the stomach. There is also an inability of the oesophagus to contract and push the swallowed food into the stomach.
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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.
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Squamous cell carcinoma in situ is a disordered growth of the skin epidermis which may extend to include epithelium of the upper part of the hair follicles.
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Nasal discharges and sneezing are two clinical signs that are associated with disorders affecting the nasal cavity and/or nasal sinuses.
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Most cancers originate from the lining of the nose (epithelium). Benign tumours (adenomas) are rare but if they are surgically removable, they are curable. Malignant tumours (carcinomas) are more common with many different types.
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The hip is a ball and socket joint of the hip and necrosis or death of the femoral head means that the ball part of the joint is no longer properly functioning. This is because during the growing phase the bone of the femoral head becomes deprived of its blood supply and dies.
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Neuroendocrine cells produce rare tumours (carcinoids, Merkel cell tumours and neuroendocrine tumours). In general, the tumours are slow growing but will eventually spread (metastasize) to other parts of the body.
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Chemodectomas are tumours of the chemoreceptors. They include both benign (non-spreading) adenomas and malignant carcinomas.
