The clinical usefulness of the hepatic perfusion index (HPI) at the time of presentation has been evaluated in patients with colorectal cancer. In 83 consecutive patients, the HPI was abnormally elevated in 34 of 37 (93%) patients with overt metastases. This study confirms that the HPI is elevated in most patients with overt hepatic metastases. Long-term follow-up of patients with abnormal HPI and no obvious liver metastases is continuing.
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Hemingway et al. (1995) studied this question.
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