'Weak giants' are produced by:
d. Pituitary adenomas(Ref: Nelson's 20/e p 2714-2724)Hyperpituitarism causes tall stature (Giants), with weak muscles; Most common cause of Hyperpituitarism is Pituitary adenoma.
Thyroid adenomas
Thyroid carcinomas
Parathyroid adenomas
Pituitary adenomas
Endocrinology