Computed tomography of Sipple syndrome

Area of Science:

• Radiology
• Endocrinology
• Oncology

Background:

• Sipple syndrome, also known as Multiple Endocrine Neoplasia type 2A (MEN2A), is a genetic disorder.
• It is characterized by medullary thyroid carcinoma and pheochromocytoma.
• Adrenal medullary hyperplasia can also be associated with Sipple syndrome.

Observation:

• This study presents computed tomographic (CT) findings in a patient diagnosed with Sipple syndrome.
• Specific CT observations included pheochromocytoma, adrenal medullary hyperplasia, and medullary thyroid carcinoma.
• The imaging characteristics of these conditions were analyzed in the context of the syndrome.

Findings:

• CT can effectively visualize the key components of Sipple syndrome.
• Diffuse enlargement of one or both adrenal glands on CT, in conjunction with clinical and laboratory signs of pheochromocytoma, is a significant indicator.
• This finding strongly suggests the presence of underlying adrenal medullary hyperplasia and Sipple syndrome.

Implications:

• Early and accurate diagnosis of Sipple syndrome is crucial for timely intervention and management.
• CT imaging plays a vital role in identifying the specific neoplastic and hyperplastic changes associated with the syndrome.
• Recognizing the CT signs of adrenal medullary hyperplasia in the context of pheochromocytoma can aid in the diagnosis of Sipple syndrome, potentially improving patient outcomes.