<prompt> Weak giants are produced by:Thyroid adenomasThyroid carcinomasParathyroid adenomasPituitary adenomas  <response>: d. Pituitary adenomasRef: Nelsons 20e p 2714-2724Hyperpituitarism causes tall stature Giants, with weak muscles; Most common cause of Hyperpituitarism is Pituitary adenoma. 