Table 1. Number (Percentage) of Publications For Neoplasms In PubMed and the Web of Science (WoS).

PubMed				WoS
Quartile	Rank	Cancer	Output (%)	Rank	Cancer	Output (%)
1	1	Breast	8736 (13.81)	1	Breast	17563 (13.83)
1	2	Intestinal	6304 (9.97)	2	Intestinal	11305 (8.91)
1	3	Lung	5127 (8.10)	3	Lung	11237 (8.86)
1	4	Leukemia	4762 (7.53)	4	Leukemia	10226 (8.06)
1	5	Prostatic	4606 (7.28)	5	Pancreatic	9118 (7.19)
1	6	CNS	4106 (6.49)	6	Prostatic	8573 (6.76)
2	7	Liver	3877 (6.13)	7	Liver	7091 (5.59)
2	8	Uterine	3181 (5.03)	8	CNS	6664 (5.25)
2	9	Lymphoma	2801 (4.43)	9	Lymphoma	5270 (4.15)
2	10	Melanoma	2371 (3.75)	10	Kidney	4563 (3.60)
2	11	Ovarian	2235 (3.53)	11	Melanoma	4398 (3.47)
2	12	Stomach	1938 (3.06)	12	Ovarian	4153 (3.27)
2	13	Pancreatic	1937 (3.06)	13	Soft Tissue	3826 (3.02)
2	14	Kidney	1788 (2.83)	14	Mouth	3348 (2.64)
3	15	Mouth	1545 (2.44)	15	Stomach	3143 (2.48)
3	16	Urinary	1208 (1.91)	16	Hodgkin	3130 (2.47)
3	17	Esophageal	1191 (1.88)	17	Myeloma	2683 (2.12)
3	18	Thyroid	1182 (1.87)	18	Uterine	2378 (1.87)
3	19	Soft Tissue	1112 (1.76)	19	Urinary	2259 (1.78)
3	20	Myeloma	1085 (1.72)	20	Thyroid	1991 (1.57)
4	21	Testicular	568 (0.90)	21	Esophageal	1454 (1.15)
4	22	Hodgkin	500 (0.79)	22	Testicular	1017 (0.80)
4	23	Laryngeal	442 (0.70)	23	Mesothelioma	567 (0.45)
4	24	Mesothelioma	336 (0.53)	24	Laryngeal	526 (0.41)
4	25	Gallbladder	163 (0.26)	25	Gallbladder	213 (0.17)
4	26	Vulvar	159 (0.25)	26	Vulvar	149 (0.12)
		Total	63260 (100)		Total	126845 (100)

Neoplasms are listed in order of their decreasing contribution to the overall research output for the 26 neoplasms in each database, in 2007.