Pyogenic liver abscesses associated with nonmetastatic colorectal cancers: An increasing problem in Eastern Asia

Figure 1 Growth trend of reported cases in different countries/regions from 1960 to 2011.

Figure 2 Age distribution of reported cases in different countries/regions.

Figure 3 Categorization of pathogens in Eastern Asian and non-Eastern Asian patients. A: Distribution of Gram-negative and Gram-positive pathogens; B: Distribution of Klebsiella pneumoniae (K.P) and non-K.P. There were significant differences in categories of pathogens between Eastern Asian and non-Eastern Asian patients (P < 0.01).

Figure 4 Distribution of colorectal cancer and liver abscesses.

Figure 5 Probability of abscess in different liver lobes in Eastern Asian and non-Eastern Asian patients. There was no significant difference between the two groups (P > 0.05).

Figure 6 Univariate analysis of abscess size in colorectal cancer related pyogenic liver abscess patients. A: Abscess sizes in different geographical groups; B: Abscess sizes in different gender groups; C: Abscess sizes in different age groups; D: Abscess sizes in different pathogenic groups. There was significant difference in liver abscess sizes between Eastern Asian and non-Eastern Asian patients (P < 0.05). K.P: Klebsiella pneumoniae.

Figure 7 Clinical presentations of colorectal cancer related pyogenic liver abscess patients.

Figure 8 Probability of cancer in different colorectal regions in Eastern Asian and non-Eastern Asian patients. A: Probability of cancer appeared in the right and left hemi-colon; B: Probability of cancer in sigmoid and rectum and other regions. Sigmoid and rectum were the more common cancer sites, compared with other regions (P < 0.05).