Amyloid tumor of the breast

Surgical Case Reports

Table 1 Amyloid tumor of the breast: reported cases in Japan

Author/year	Age/sex	MMG	US	Treatment	Medical history
Yokoo 1998	76F	Mass with micro calc.	–	Excisional biopsy	–
Honda 2000	52F	–	Hypoechoic mass	Excisional biopsy	none
Hukushima 2002	59F	–	Indistinct mass	Excisional biopsy	SLE, hemodialysis
Hosoi 2008	79F	None	Mass	Excisional biopsy	Sjogren’s syndrome
Ito 2011	57F	–	Well-defined and smooth hypoechoic mass	Excisional biopsy	None
Tsuji 2016	77F	FAD	Hypoechoic area	CNB: amyloid →resection	None
Our case 2018	45F	No abnormality	Well-defined and rough hypoechoic mass	MMT: amyloid →follow-up	Sjogren’s syndrome

All were women, and median age was 67.5 years. Findings may be suggestive of breast cancer, such as microcalcification by mammography or an indistinct hypoechoic mass by ultrasonography. Excisional biopsy was performed in five of the six cases, and resection for confirmation was performed in the other case. Two cases had medical histories of autoimmune disease