PMC7924157_01
MRI pituitary: T1W coronal with contrast - thickened pituitary stalk and enhancement. MRI = magnetic resonance imaging.
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Magnetic resonance imaging of the pituitary revealed an enlarged gland and thickened pituitary stalk measuring 5.2 mm, with uniform gadolinium enhancement (Fig. 1).
High resolution chest CT showing thin walled cystic changes (A) and CD1a histiocytes on open lung biopsy, x400 magnification (B). CT = computed tomography.
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Chest radiography and subsequent high-resolution computed tomography demonstrated bilateral upper-zone thin-walled cystic lung disease (Fig. 2 A). After initial equivocal results for LCH versus PLAM, specialist pulmonary pathologists were able to finally identify CD1a-positive histiocytes from a middle lobe biopsy specimen (Fig. 2 B), favoring a working diagnosis of burnt-out LCH.