Corrigendum to “Ectopic breast tissue presenting as an enlarging abdominal mass” [Radiology Case Reports 15 (2020) 733–740]

Cutaneous Periumbilical Fibroadenomas: A Rare Case of Ectopic Breast Tissue

“…Mammary ridges are termed "milk lines" and extend from the axilla to the inguinal region [2]. During normal development, mammary ridges form breasts in the pectoral region and their remainder regresses [1,2]. It is theorized that ectopic breast tissue can develop if the remaining portions of the mammary ridges fail to regress [1][2][3]6].…”

“…During normal development, mammary ridges form breasts in the pectoral region and their remainder regresses [1,2]. It is theorized that ectopic breast tissue can develop if the remaining portions of the mammary ridges fail to regress [1][2][3]6]. Ectopic breast tissue can occur anywhere along the mammary ridge but is most commonly found in the axilla; findings outside of the axilla are rare [1][2][3].…”

“…Ectopic fibroadenoma is a benign tumor of the breast that is most commonly found in the axilla but can occur in any location along the anatomic distribution of the embryologic milk line [1][2][3]. Lesions range from asymptomatic to severely tender, erythematous, and edematous growths [2,4].…”

“…Ectopic fibroadenoma is a benign tumor of the breast that is most commonly found in the axilla but can occur in any location along the anatomic distribution of the embryologic milk line [1][2][3]. Lesions range from asymptomatic to severely tender, erythematous, and edematous growths [2,4]. Ectopic breast tissue is responsive to hormonal stimulation and therefore may be asymptomatic until times of physiologic (ie, puberty, menstruation, pregnancy) or pathologic fluctuations in the level of reproductive hormones [1][2][3].…”

“…Lesions range from asymptomatic to severely tender, erythematous, and edematous growths [2,4]. Ectopic breast tissue is responsive to hormonal stimulation and therefore may be asymptomatic until times of physiologic (ie, puberty, menstruation, pregnancy) or pathologic fluctuations in the level of reproductive hormones [1][2][3]. Ultrasound or mammography can be used during the initial evaluation, but histopathologic findings consistent with the presence of glandular, nipple, and/or areolar breast tissue are required for diagnosis [4,5].…”