Endocrine tumours

image of Endocrine tumours
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Common endocrine tumours in dogs and cats include tumours of the thyroid gland, parathyroid gland, pituitary gland, adrenal gland and endocrine pancreas. This chapter covers thyroid gland tumours; parathyroid gland tumours; pituitary gland tumours; hyperadrenocorticism; other adrenal gland tumours; endocrine cancers of the pancreas.

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20.2 Ventrodorsal view from a technetium scan in a cat with thyroid carcinoma, showing irregular uptake of isotope into three thyroid masses in the cervical region.
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20.3 Thyroid carcinoma in a cat prior to surgical resection. Note the size and irregular shape of the tumour.
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20.4 A large thyroid carcinoma involving the larynx in an 8-year-old neutered male English Pointer.
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20.5 Ventrodorsal view from a technetium scan of a dog, showing heterogenous uptake (shape and density) into a thyroid mass. Histopathology of the excised mass indicated thyroid adenocarcinoma.
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20.6 Ventrodorsal view from a technetium scan of a hyperthyroid dog, showing homogenous uptake into a thyroid mass. Histopathology of excised tissue was consistent with a well differentiated thyroid carcinoma.
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20.9 Ultrasound image of a single parathyroid gland adenoma (arrowed) in a 10-year-old neutered male Long-haired Dachshund.
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20.10 A 10-year-old castrated male cat before and after development of acromegaly.
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20.11 An 11-year-old male DSH cat with acromegaly, demonstrating enlargement of the head and mild prognathia inferior.
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20.12 Magnetic resonance imaging study demonstrating a pituitary mass in a cat with acromegaly.
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20.13 A poodle showing clinical manifestations of hyperadrenocorticism. Note the alopecia and thin skin.
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20.14 ACTH stimulation test results.
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20.15 Low-dose dexamethasone suppression test results.
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20.16 Ultrasound image of the left adrenal gland in an 8-year-old neutered male Labrador with pituitary-dependent hyperadrenocorticism. The adrenal gland is enlarged (arrowed) but has normal architecture.
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20.17 Ultrasound image of the right adrenal gland of a 5-year-old neutered female Australian Shepherd Dog with bilateral adrenal tumours. Note the rounded appearance (arrowed) and abnormal adrenal architecture.
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20.18 CT image of a 10-year-old neutered female mixed-breed dog with a left adrenal tumour. Note the adrenal mass (arrowed) medial to the left kidney (bright due to contrast medium).
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20.19 A large adrenal mass invading a kidney, seen after concurrent adrenalectomy and nephrectomy.
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20.20 A 13-year-old neutered female DSH cat with PDH.
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20.21 Skin laceration induced by grooming in a 10-year-old neutered male DSH cat with PDH.
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20.23 Insulinoma identified in the pancreas during surgery in a 10-year-old neutered male German Shorthaired Pointer with hypoglycaemia.
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