CTICasesPulmonary Langerhans Cell Histiocytosis (PLCH)
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Imaging findings
Multiple upper-lobe-predominant nodules and cystic spaces, with findings consistent with active pulmonary Langerhans cell histiocytosis.
Key takeaways
PLCH often presents as both cystic lesions and nodules. Importantly, the nodules may wax and wane, which can be a key diagnostic clue compared to other chronic ILDs.
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