There are multiple definitions:

1. bronchopleural fistula(English)

   • Pulmonology

2. backprojection-filtering(English)

   • algorithm
   • CBCT, CT, FBPD, FDK, FPD-HCBCT
   • Signal analysis, Medical imaging, Filtering (of signals)
   • https://doi.org…-9155/51/16/N03

3. Brazilian purpuric fever(English)

   • a clone has a lipooligosaccharide that varies significantly from non-BPF strains, and this clone possesses a unique pilin protein
   • Tropical medicine, Infection
   • https://doi.org…06668-9.50033-8

4. bypass fat(English)

   • BPP, BPPF, FCM
   • Nutrition, Veterinary medicine
   • https://doi.org…250-019-01942-x