【医】 retroperitoneum
【医】 peritoneum; siphac; velamentum abdominale
after; back; behind; offspring; queen
【医】 meta-; post-; retro-
antrum; cavity
【医】 cava; cavern; caverna; cavitas; cavitat; cavity; cavum; celio-; chamber
coel-; coelio-; lumen; lumina; space; spatia; spatium