Areas of research and clinical approaches to the study of liver abscess

Table 3 Distribution of the top 20 descriptors and topic qualifiers assigned to papers on liver abscess and type of liver abscess (2001-2015)

Liver abscess				Liver abscess, amebic				Liver abscess, pyogenic
Descriptor	n	Qualifier	n	Descriptor	n	Qualifier	n	Descriptor	n	Qualifier	n
Liver abscess	1278	Complications	560	Liver abscess, amebic	414	Diagnosis	181	Liver abscess, pyogenic	344	Complications	167
Humans	1227	Diagnosis	555	Humans	352	Parasitology	172	Humans	341	Microbiology	158
Male	845	Microbiology	537	Male	272	Complications	106	Male	266	Diagnosis	152
Female	580	Etiology	495	Entamoeba histolytica	207	Therapeutic use	104	Female	185	Etiology	120
Middle aged	549	Pathology	321	Animals	190	Pathology	102	Middle aged	173	Isolation and purification	95
Adult	411	Surgery	309	Adult	146	Drug therapy	94	Aged	139	Therapeutic use	88
Aged	391	Therapeutic use	307	Middle aged	141	Immunology	93	Adult	128	Therapy	87
Tomography, X-ray computed	363	Isolation and purification	294	Female	127	Isolation & purification	91	Klebsiella pneumoniae	92	Drug therapy	66
Anti-bacterial agents	227	Drug therapy	277	Metronidazole	76	Therapy	75	Klebsiella infections	91	Surgery	64
Drainage	194	Therapy	274	Cricetinae	67	Etiology	72	Anti-bacterial agents	85	Pathology	64
Treatment outcome	181	Radiography	248	Diagnosis, differential	62	Genetics	67	Retrospective studies	74	Radiography	56
Diagnosis, differential	179	Methods	222	Tomography, X-ray computed	59	Epidemiology	62	Tomography, X-ray computed	71	Methods	56
Liver neoplasms	173	Adverse effects	177	Entamoebiasis	52	Metabolism	59	Aged, 80 and over	69	Epidemiology	56
Klebsiella infections	164	Ultrasonography	138	Aged	51	Pathogenicity	59	Treatment outcome	64	Mortality	35
Klebsiella pneumoniae	163	Administration and dosage	97	Liver	48	Methods	58	Drainage	62	Ultrasonography	32
Liver	142	Genetics	95	Treatment outcome	47	Blood	47	Risk Factors	49	Genetics	25
Retrospective studies	133	Epidemiology	91	Antibodies, protozoan	45	Radiography	39	Adolescent	39	Metabolism	24
Animals	131	Pathogenicity	68	Dysentery, amebic	44	Surgery	37	Diagnosis, differential	33	Pathogenicity	19
Aged, 80 and over	118	Classification	67	Antiprotozoal agents	43	Ultrasonography	36	Taiwan	30	Adverse effects	19
Adolescent	94	Secondary	65	Drainage	41	Analysis	35	Prognosis	30	Administration and dosage	16