A case report of primary hepatic squamous cell carcinoma that remarkably responded to low dose arterial injection of anti-cancer drugs.

Primary hepatic squamous cell carcinoma is rare. In this case, a malignant lesion was detected in bilateral hepatic lobes by ultrasound sonography and computed tomography. The maximum tumor diameter was approximately 10 cm. Tumor tissue obtained by aspiration liver biopsy was diagnosed as poorly differentiated squamous cell carcinoma. In gallium radioisotope scanning, no focus was detected in any organs other than the liver. As therapy, anti-cancer drugs were administered via hepatic arterial infusion. The patient received 10 mg of cis-diaminedichloroplatinum (CDDP) and 250 mg of 5-fluorouracil (5-FU) for 5 days every week. The therapy was continued for 3 weeks, and the same doses of CDDP and 5-FU were given to the patient once per 2 weeks in the clinic. The intrahepatic tumor lesion began to decrease from the start of treatment, and had almost disappeared 8 months after. Recurrence of the liver tumor occurred at 12 months from the start of treatment. The patient was re-admitted and treated with the same anti-cancer drugs via hepatic arterial injection. However, the drugs showed remarkable effect no longer and she died in month 23. The treatment with chemotherapy via hepatic arterial injection for a patient with squamous cell carcinoma offered a favorable therapeutic effect.