I have used the following endocrine/sign affinities for many years; thought posting them would be of some interest.
Pineal: Leo
Hypothalamus (not an endocrine): Virgo
Anterior Pituitary: Libra
Posterior Pituitary: Scorpio
Thyroid: Sagittarius
Parathyroid: Capricorn
Thymus: Aquarius
Pancreas: Pisces & Aries
Adrenal Cortex: Taurus
Adrenal Medulla: Gemini
Ovary/Testes: Cancer
Pineal: Leo
Hypothalamus (not an endocrine): Virgo
Anterior Pituitary: Libra
Posterior Pituitary: Scorpio
Thyroid: Sagittarius
Parathyroid: Capricorn
Thymus: Aquarius
Pancreas: Pisces & Aries
Adrenal Cortex: Taurus
Adrenal Medulla: Gemini
Ovary/Testes: Cancer