- 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.