Migrating larvae of Ascaris lumbricoides, Strongyloides stercoralis, and Hookworm spp. A-S-H: Heart-To-Lung Migration B. Paragonimus westermani ova – sputum may be viscous, streaked with blood, and tinged with brownish flecks, which are clusters of eggs (“iron filings”) C. Echinococcus granulosus hooklets from pulmonary hydatid cysts: Pulmonary Hydatid Disease