237.4 📌 章末速記

Taenia saginata (beef) — > 12 uterine branches
Taenia solium (pork; cysticercosis from eggs) — 7-13 branches
Diphyllobothrium (freshwater fish) — B12 deficiency + megaloblastic anemia
Hymenolepis nana (person-to-person) — pediatric / crowded
Treatment: praziquantel single dose (or niclosamide)

Egg ingestion (not pork — fecal contamination, autoinfection)
Tissue cysts in brain, muscle, eye, subcutaneous
Neurocysticercosis = #1 parasitic CNS disease worldwide
Forms: active + transitional + calcified + extraparenchymal
MRI for diagnosis; EITB serology most specific
Treatment: albendazole 15 mg/kg/d × 10-15 d + dexamethasone + anticonvulsants
- praziquantel for heavy burden
Calcified only: anticonvulsants only

E. granulosus → CE (Cystic Echinococcosis) — dog/sheep cycle; liver 70%; daughter cysts in mother
E. multilocularis → AE (Alveolar Echinococcosis) — fox/dog; infiltrative tumor-like
CE Treatment: albendazole + PAIR (accessible cysts) + surgery + observation (inactive)
AE Treatment: surgical R0 resection + albendazole lifelong
Rupture of CE = anaphylaxis + dissemination