RADIOLOGY ANATOMY OF THE PITUITARY GLAND

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Presentation transcript:

RADIOLOGY ANATOMY OF THE PITUITARY GLAND Dr. Rasheed Al Jurayyan

NORMAL PITUITARY GLAND The gland is composed of two parts: Anterior lobe (adeno hypophysis) Posterior lobe (neuro hypophysis) Normal size: Weight: 0.5g Height: 4-16 mm Anterior posterior: 5-16 mm

INDICATIONS FOR IMAGING THE PITUITARY GLAND Hormonal dysfunction Cushing syndrome Growth abnormalities e.g. Growth hormone deficiency, acromegaly Visual abnormalities headache

What is best modality to image the pituitary gland ? X ray CT scan MRI US Nuclear medicine

What is best modality to image the pituitary gland ? X ray CT scan MRI US Nuclear medicine

CT scan MRI

CT scan MRI

X RAY

1 2 3 4 5 6

2- Anterior clinoid process 3-Floor of sella turcia (Pituitary fossa) 1 2 1-Optic sulcus 2- Anterior clinoid process 3-Floor of sella turcia (Pituitary fossa) 4- Posterior clinoid process 5- Dorsum sella 6- Sphenoid sinus 3 4 5 6

MRI

4 3 5 2 6 1

1- pituitary gland 2- sphenoid sinus 3- optic chiasm 4- hypothalamus 5- pituitary stalk 6- claivus 5 2 6 1

NORMAL PITUITARY ADENOMA

2 3 1 4 5 6

2 3 1 4 5 6

Optic chiasm Pituitary stalk Pituitary gland Carotid artery Cavernous sinus Sphenoid sinus

THE END