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* Non-endocrine tumours may be capable of secreting hormones, or hormone-like factors.
** A parathormone-like substance may be secreted in such a manner.
===Apocrine Gland Adenocarcinoma===
* Malignant tumours of the anal sac apocrine glands can produce PTH-related peptide (PTHrp).
** This induces a pseudo-hyperparathyroidism and hypercalcaemia.
===[[Lymphosarcoma]]===
* 10 to 40% of cases in dogs may cause a pseudo-hyperparathyroidism.
===Other Carcinomas===
Some other carcinomas may also be capable of causing pseudo-hyperparathyroidism.
[[Category:Parathyroid Glands - Pathology]]