[Professor Ling Changquan's experience in treating primary liver cancer: an analysis of herbal medication].

On the basis of outpatients' medical records concerning primary liver cancer (PLC), data of 552 patients (with 2020 effective prescriptions) from the Outpatient Department of Changhai Hospital treated by Professor Ling Changquan were collected. The nature, flavor and meridian distribution of the herbs used in the prescriptions were summarized by frequency method, and the features of the herbs used according to syndrome differentiation were analyzed by logistic regression. The couple herbs used were analyzed by cluster analysis. All the data were analyzed in combination with the experience of the specialist. It showed that most of the frequently used herbs were herbs for invigorating the spleen to promote appetite, removing toxic materials to inhibit tumor growth, and activating blood circulation to dissipate blood stasis. These herbs are mostly of plain or cool nature, and mainly of sweet, bitter, or acrid taste. It also showed that the most frequently used herbs for qi deficiency were Astragalus membranaceus, Atractylodes macrocephala, and Pseudostellariae; Caulis Spatholobi and Chinese jujube for blood asthenia; Fructus Corni and Ophiopogon japonicus for yin deficiency; Agastache rugosa, Semen Plantaginis and Poria for water-dampness; cape jasmine fruit and baikal skullcap root for heat excess; peach seed and Radix Paeoniae Rubra for blood stasis; Curcuma wenyujin, Akebia trifoliata and Bupleurum chinese for qi stagnation. A total of 19 pairs of couple herbs were summarized by the cluster analysis.