Breast Cancer in Adolescents and Young Adults Less Than 40 Years of Age in Nigeria: A Retrospective Analysis

Table 1

Proportion of cancer sites in females aged 15-39 years from 2009 to 2016 in descending order ().

Order	Sites	Total no. of cases	Percent
1	Breast	2798	49.75%
2	Cervix uteri	412	7.33%
3	Ovary	355	6.31%
4	Other skin	152	2.70%
5	Connective and soft tissue	151	2.68%
6	Non-Hodgkin lymphoma	125	2.22%
7	Liver	118	2.10%
8	Kaposi sarcoma	98	1.74%
9	Bone	97	1.72%
10	Corpus uteri	90	1.60%
11	Uterus unspecified	92	1.64%
12	Rectum	85	1.51%
13	Colon	75	1.33%
14	Thyroid	65	1.16%
15	Nasopharynx	60	1.07%
16	Hodgkin disease	59	1.05%
17	Eye	52	0.92%
18	Kidney	43	0.76%
19	Nose, sinuses, etc.	43	0.76%
20	Myeloid leukemia	42	0.75%
21	Other female genital organs	38	0.68%
22	Vulva	37	0.66%
23	Anus	37	0.66%
24	Salivary glands	34	0.60%
25	Placenta	32	0.57%
26	Brain, nervous system	28	0.50%
27	Stomach	27	0.48%
28	Vagina	25	0.44%
29	Mouth	19	0.34%
30	Bladder	18	0.32%
31	Pancreas	18	0.32%
32	Trachea, bronchus, and lung	17	0.30%
33	Melanoma of skin	12	0.21%
34	Hypopharynx	11	0.20%
35	Tongue	10	0.18%
36	Esophagus	10	0.18%
37	Lymphoid leukemia	10	0.18%
38	Myeloproliferative disorders	10	0.18%
39	Leukemia unspecified	9	0.16%
40	Other thoracic organs	8	0.14%
41	Lip	7	0.12%
42	Pharynx unspecified	6	0.11%
43	Multiple myeloma	5	0.09%
44	Adrenal gland	4	0.07%
45	Other endocrine	4	0.07%
46	Small intestine	4	0.07%
47	Gallbladder, etc.	4	0.07%
48	Tonsil	4	0.07%
49	Larynx	2	0.04%
50	Mesothelioma	2	0.04%
51	Renal pelvis	2	0.04%
52	Other oropharynx	2	0.04%
53	Immunoproliferative diseases	1	0.02%
	Total	5624	100