Table 1.

Clinicopathological characteristics of male breast lymphoma cases

No.	Age [years]	Size of tumor [cm]	Site of tumor	Clinical information	Lymph nodes	Histology	Primary / secondary	Author(s), year [Ref. No.]
1.	9	N/A	N/A	N/A	N/A	N/A	Primary	Docimo, 1959 [14]
2.	35	N/A	R breast	N/A	N/A	N/A	Primary	Sinner, 1961 [14]
3.	38	N/A	R breast	N/A	N/A	N/A	Primary	Bettini & Saint Omer, 1964 [14]
4.	81	4×4	R breast	N/A	Present	B-cell, DSNC	Primary	Aoi et al., 1985 [14]
5.	65	4×5×2	L breast	N/A	Absent	B-cell, DLBCL	Primary	Yamamoto et al., 1986 [14]
6.	74	>2	R breast	N/A, prostatectomy	Present	B-cell, DLBCL	Primary	Kawanisi et al., 1989 [14]
7.	81	N/A	Bilateral, diffuse	Gynecomastia, suspicious of prostatic nodule, Estrogen TX (9 years)	Present	B-cell, DLBCL	Primary	Hugh et al., 1990 [15]
8.	65	7×5x5	L breast	N/A	Absent	B-cell, DLBCL	Primary	Kitaoka et al., 1900 [14]
9.	45	5.6×5×3.5 / 4×3.5×2.2	Bilateral, under nipple	N/A	Absent	B-cell, DLBCL	Primary	Murakami et al., 1993 [14]
10.	69	11×11×8	R breast	N/A, Estrogen TX (10 years)	Absent	B-cell, DM	Primary	Okada et al., 1995 [14]
11.	N/A	N/A	N/A	N/A	N/A	DLBCL	Primary	Abbondanzo et al., 1996 [16]
12.	N/A	N/A	N/A	N/A	N/A	DLBCL	Primary	Abbondanzo et al., 1996 [16]
13.	76	5.6×5.5×3.5	R breast	Gynecomastia	Absent	B-cell, DLBCL	Primary	Murata et al., 1996 [17]
14.	65	4×5×2.5	L breast	Elastic-hard mass	Present	B-cell, DLBCL	Primary	Hinoshita et al., 1998 [18]
15.	69	2.4×3.9	L breast	Palpable mass, bilateral gynecomastia	Absent	B-cell, DLBCL	Primary	Sashiyama et al., 1999 [14]
16.	N/A	N/A	N/A	N/A	N/A	N/A	N/A	Wong et al., 2002 [19]
17.	44	2	L breast	Palpable mass	Present	B-cell, DLBCL	Primary	Cabras et al., 2004 [20]
18.	67	6×5×4	R breast	Palpable mass	Present	B-cell, DLBCL	Primary	Mpallas et al., 2004 [21]
19.	50	4×4×7	R breast	Palpable breast mass, axillary masses	Present	B-cell, DLBCL (ARL)	Primary	Chanan-Khan et al., 2005 [22]
20.	63	N/A	R breast	Palpable mass	Present	DLBCL	Secondary	Vignot et al., 2005 [23]
21.	33	N/A	L breast	Breast mass	N/A	TCRBCL	Secondary	Duncan et al., 2006 [2]
22.	65	3	R breast	Palpable mass	Absent	T-cell, ALCL	Primary	Gualco et al., 2009 [24]
23.	64	6×7	L breast	Painless growing lump	Absent	B-cell, DLBCL	Primary	Miura et al., 2009 [25]
24.	62	7×4	L breast	Palpable breast mass	Present	B-cell, MZL	Primary	Duman et al., 2011 [26]
25.	51	2.3	L breast	Palpable mass	Absent	T-cell, ALCL	Primary	Ko et al., 2012 [27]
26.	76	N/A	L breast	Palpable lumps	Absent	B-cell, DLBCL	Primary	Mouna et al., 2012 [28]
27.	48	4.8×4.7	R breast	Painful lump, HIV-positive, ART-induced gynecomastia	Present	B-cell, DLBCL	Primary	Rastogi et al., 2012 [29]
28.	85	N/A	R breast	Palpable mass	N/A	B-cell lymphoma	N/A	Surov et al., 2012 [8]
29.	46	3×4	R breast	Palpable mass	Present	DLBCL	Primary	Lokesh et al., 2013 [30]
30.	60	5×4	L breast	Palpable mass	Present	SLL	Primary	Lokesh et al., 2013 [30]
31.	50	2×2	L breast	Gynecomastia, palpable lump behind nipple	Present	B-cell, DLBCL	Primary	Mukhtar et al., 2013 [31]
32.	70	N/A	R breast	Bilateral enlargement, R breast induration	Absent	B-cell recurrence of MCL	Secondary	Ikeda et al., 2015 [3]
33.	56	4×2.5×3.7	R breast	Palpable mass	Present	B-cell, MCL	Secondary	Ruiz Pardo et al., 2017 [32]
34.	N/A	N/A	N/A	N/A		B-cell, aggressive	Primary	Franco Pérez, 2017 [33]
35.	65	1.7×1.5	R breast	Cervical lymphadenopathy, gynecomastia	Present	B-cell, DLBCL	Secondary	Sharma, 2017 [34]
36.	74	N/A	R breast	N/A	N/A	B-cell, DLBCL	Primary	Tokuyama et al., 2017 [35]
37.	47	N/A	Bilateral	Gynecomastia	Present	HL	Secondary	Lin & Dalal, 2018 [1]
38.	78	2.5×2	R breast	Breast mass	Absent	CLL	Secondary	Present case

N/A: Not available; R: Right; L: Left; HIV: Human immunodeficiency virus; ART: Antiretroviral treatment; DSNC: Diffuse small non-cleaved cell; DLBCL: Diffuse large B-cell lymphoma; DM: Diabetes mellitus; ARL: Acquired immunodeficiency syndrome (AIDS)-related lymphoma; TCRBCL: T-cell/histiocyte-rich B-cell lymphoma; ALCL: Anaplastic large-cell lymphoma; MZL: Marginal zone lymphoma; SLL: Small lymphocytic lymphoma; MCL: Mantle cell lymphoma; HL: Hodgkin’s lymphoma; CLL: Chronic lymphocytic leukemia.