Best marker for distinguishing reactive from neoplastic mesothelial proliferation?
ACalretinin
BWT1
CD2-40
DBAP1 loss
A patient's skin biopsy shows a box-shaped or square-shaped pattern of inflammatory infiltrate, as shown in the image. What is the most likely diagnosis?
ALichen planus
BLichen amyloidosis
CMorphea
DLichen nitidus
A CT scan shows the 'crazy paving' pattern in both lungs. Which bronchoalveolar lavage finding would confirm pulmonary alveolar proteinosis?
AMilky fluid with PAS-positive material
BHemosiderin-laden macrophages
CEosinophilia >25%
DCD4/CD8 ratio >3.5
+ 7 more in the PDF
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