Paragonimiasis

Paragonimus westermani

(ORIENTAL LUNG FLUKE )

TREMATODES (FLUKES)

• ACUTE PHASE
• 1. DIARRHEA
• 2. ABDOMINAL PAIN
• 3. FEVER
• 4. COUGH
• 5. URTICARIA
• 6. HEPATOSPLENOMEGALY
• 7. PULMONARY ABNOPRMALITIES
• 8. URTICARIA

• CHRONIC PHASE
• 1. COUGH
• 2. EXPECTORATION OF DISCOLORED SPUTUM
• 3. HEMOPTYSIS
• 4. CHEST RADIOLOGIC ABNORMALITIES

• 1. Eggs are excreted unembryonated in the sputum, or alternately
• they are swallowed and passed with stool.

• 2. Miracidia hatch and seek the first intermediate host, a
• snail.

3. Cercariae, which emerge from the snail. The cercariae invade the second intermediate host, a crustacean such as a crab or crayfish.

• 1. HUMANS
• 2. pigs
• 3. dogs
• 4. variety of feline species can also harbor Paragonimus westermani

• Ingestion of inadequately cooked or pickled crustaceans
• containing metacercariae.

• Diagnosis is based on microscopic demonstration of eggs in stool or
• sputum.