Table of ContentsClinical Features
Cite this page: Pulmonary alveolar microlithiasis. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/lungnontumormicrolithiasis.html. Accessed March 28th, 2017.
- Rare, diffuse bilateral microliths or calcospherites with prominent rings within alveoli of otherwise normal lung
- 1/3 of cases are familial, may have autosomal recessive inheritance
- Most cases asymptomatic with benign course, but cough and more severe disease reported
- Microliths may be confused with more common entity of corpora amylacea
- Microlithiasis is more extensive
- Corpora amylacea may have rings but lack calcification, and examination of Congo red stained material with polarized light reveals a Maltese cross pattern