Acromegaly is a rare disease, usually caused by a pituitary tumor. It typically exhibits slow evolution and can result in numerous complications. In the present case report, the patient presents with hyperthyroidism associated with ophthalmopathy and right nodular goiter. The laboratory tests reveal persistent high levels of phosphorus without an apparent cause. After ruling out common pathologies associated with this finding, a focus ia placed on the clinical aspects associated with acromegaly, a rare cause of hyperphosphatemia. Laboratory tests and MRI confirm the diagnosis. This case highlights the challenges in diagnosing and managing a rare endocrine pathology. Read the full article here.