Abstract
Liesegang rings are eosinophilic, concentric, lamellated structures that can assume a variety of shapes and sizes ranging from a few microns to hundreds of microns. To date, Liesegang rings have been reported in around 30 examples in the English literature, in the kidney, breast, female genital tract, and skin, and only a single report in the lung associated with allergic bronchopulmonary aspergillosis. Liesegang rings are usually incidental discoveries and have been associated with benign cystic lesions, inflammatory diseases, fibrosis, and tissue necrosis. Their typical appearance helps differentiate them from their mimics including parasites, foreign materials, corpora amylacae, and psammoma bodies. We report Liesegang rings in a 62-year-old male patient with pulmonary tuberculosis to create awareness about this rare entity among pathologists to avoid its misdiagnosis as a parasitic infection.
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