A 33-year-old woman came from the outskirts of Danzhou city, Hainan province, China. In April 2010, she reported an 11-month history of recurrent diarrhea associated with colicky pain. The watery diarrhea had persisted since May 2009, occurring about three to four times daily. She also experienced weight loss of 12.5 kg. She was admitted to an outpatient clinic and one hospital in Danzhou. Since May 2009 to March 2010, the patient was given a treatment of checking diarrhea. The detailed diagnosis, treatment and lab investigation of her diarrhea were not clear. In April 2010, because her symptoms could not be relieved, she was admitted to People’s Hospital of Hainan province in Haikou, China. Clinical examination showed moderate dehydration; pallor; a soft, nontender, nondistended abdomen; and marked pitting edema of the lower limbs. The liver and spleen were not enlarged. Serum total protein and albumin levels were low (47 and 14 g/L, respectively), and proteinuria was not detected. A chest radiograph and abdominal ultrasound did not disclose any specific abnormalities. Gastroscopy showed hyperemia, edema, and superficial erosions in the gastric antrum. In April 2010, stool examinations were quickly performed several times through direct smear method by the laboratory of the hospital, and nothing was found. In May 2010, Stool examinations were carefully performed 9 times through direct smear method and brine flotation by the Department of Parasitology of Hainan Medical College. Eggs (0–1 eggs/10 ×40 microscopic fields) that were elongated and peanut-shaped with flattened bipolar plugs and striated shells (43.7 × 14.6 μm) were observed as shown in Figure. The eggs were identified as those of C. philippinensis. Adult male C. philippinensis (1.6 × 0.1 mm) was also found in the stool samples. In addition, cysts of Entamoeba coli were found. The patient reported eating sashimi of two raw Misgurnus anguillicaudatus loaches every day from March to April in 2009 to treat a 7-year history of constipation. One month later, the diarrhea associated with colicky pain emerged and persisted. She had no travel history outside the residence town in the time before falling ill. All other family members did not eat the fish, and were healthy without any diarrhea. The patient was given a 30-days course of albendazole (400 mg/day). The patient left the hospital at the fifth day of treatment. Till now, the patient had an uneventful and stable recovery through telephone follow-up visit.