Prolactinoma classification

Prolactinoma Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Faizan Sheraz, M.D. [2]

Overview

Based on size, a prolactinoma can be classified as a microprolactinoma (<10 mm diameter) or macroprolactinoma (>10 mm diameter).

Classification

Based on size, a prolactinoma can be classified as:

• microprolactinoma (<10 mm diameter)

• macroprolactinoma (>10 mm diameter).

The radiographical classification for pituitary adenomas is as follows:

• 0: Normal pituitary appearance.

• I: Enclosed within the sella turcica, microadenoma, smaller than 10 mm.

• II: Enclosed within the sella turcica, macroadenoma, 10 mm or larger.

• III: Invasive, locally, into the sella.

• IV: Invasive, diffusely, into the sella.

The grading schema for suprasellar extensions is as follows:

• A: 0 to 10 mm suprasellar extension occupying the suprasellar cistern.

• B: 10 mm to 20 mm extension and elevation of the third ventricle.

• C: 20 mm to 30 mm extension occupying the anterior of the third ventricle.

• D: A larger than 30 mm extension, beyond the foramen of Monro, or Grade C with lateral extensions.

References

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