MRI of muscular hamartoma of the breast

Wong, K. W.; Ho, WC; Wong, TT

doi:10.1046/j.1440-1673.2002.01102.x

Cited by 9 publications

(8 citation statements)

References 7 publications

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“…It was described for the first time in 1973 by Davies and Riddell [6]. According to some reports, this lesion is well-circumscribed and shows oval or round opacity on mammography, and ultrasonography reveals an internally iso- or hypoechoic, solid mass with regular margins [7,8]. Concerning mammography and ultrasonography, the findings of the present case are different from previous reports of myoid hamartoma.…”

Section: Discussioncontrasting

confidence: 75%

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Myoid hamartoma of the breast that proved difficult to diagnose: a case report

et al. 2012

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Myoid hamartomas of the breast are extremely rare breast lesions, with a poorly understood pathogenesis. We describe the case of a 38-year-old premenopausal woman who presenting with a mass in the left breast. Mammography revealed an oval mass that was partly indistinct, and ultrasonography showed a hypoechoic mass with a slightly irregular margin. Bilateral breast dynamic magnetic resonance imaging was performed for a more detailed evaluation. The images showed rapid initial enhancement and a microlobulated margin. Because the suspicion of malignancy was strong at that time, core needle biopsy was performed. Histologically, the tumor was identified as fibroadenoma. A case of myoid hamartoma of the breast that proved difficult to diagnose is reported, and discussed with reference to the literature.

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Section: Discussioncontrasting

confidence: 75%

“…Wong et al reported that the signal intensity curve shows an early and significant rise on dynamic contrast enhancement [8]. Ko et al revealed early intense enhancement and washout on dynamic MRI [9].…”

Section: Discussionmentioning

confidence: 99%

Myoid hamartoma of the breast that proved difficult to diagnose: a case report

et al. 2012

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“…Previous reports indicated that my- C oid hamartomas showed similar USG finding with a fibroadenoma or a phylloides tumor (1,3). To the best of our knowledge, there is only one previous case report of MR findings of myoid hamartoma (5). In that report, a muscular hamartoma showed intermediate signal intensity on T1 and T2 weighted images, as well as an early and significant rise of signal intensity on dynamic contrast enhancement (5).…”

Section: Discussionmentioning

confidence: 87%

“…To the best of our knowledge, there is only one previous case report of MR findings of myoid hamartoma (5). In that report, a muscular hamartoma showed intermediate signal intensity on T1 and T2 weighted images, as well as an early and significant rise of signal intensity on dynamic contrast enhancement (5). Microscopically, the myoid hamartoma contained disorderly arranged smooth muscle cell and various amounts of adipose tissue, fibrous stroma, and distorted mammary lobules.…”

Section: Discussionmentioning

confidence: 91%

Myoid Hamartoma of the Breast: A Case Report

Jeh

Kang

Kim

et al. 2010

J Korean Soc Radiol

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Breast hamartomas are rare benign breast neoplasms containing various tissues (1-4). A myoid (muscular) hamartoma is a very rare subtype of hamartomas occurring in the presence of smooth muscle cells (1,2). Although a few reports described myoid hamartoma, they rarely introduced detailed sonographic findings of that lesion. We encountered a young patient with myoid hamartoma and presented the mammographic, sonographic, and histopathologic findings. Case ReportA 28-year-old woman presented with a non-tender, movable mass in her left breast over the last several months. Her medical and family history was unremarkable. Upon physical examination, the mass was found to measure about 3 cm and located in the left upper outer quadrant. No abnormality was found in the overlying skin and no axillary lymphadenopathy. Her general condition was good.A mammography was performed for the evaluation of the mass, and showed no definition due to the patient's dense breast, but was suspected to show some bulging on the contour of the upper left portion of the breast (Fig. 1). On ultrasonography, this mass showed about a 4.2×2.5 cm sized isoechoic solid mass with a focal inhomogeneously low echoic portion. The mass revealed a parallel orientation and posterior acoustic enhancement, lobulated shape, focal angular and microlobulated margin, and increased vascularity in the peripheral region (Fig. 2). No abnormal lymphadenopathy was found on ultrasonography. We suspected this mass to be a fibroademona or phylloides tumor, and categorized it as 4a according to BIRADS (Breast Imaging Reporting and Data System) lexicon.Fine needle aspiration biopsy and microscopic results suggested a ductal hyperplasia. The patient underwent a local excision under general anesthesia. The macroscopic appearance showed a partially encapsulated, rubbery pale yellow, solid mass without necrosis or hemorrhage. The histological findings indicated the presence of smooth muscle cells intermingled with lobular tissue, and a scanty amount of fibrous tissue; however, no remarkable adipose tissue was found. The immunochemistry results were positive for actin and SMMHC Myoid (muscular) hamartoma is a rare subtype of hamartoma and is characterized by the presence of smooth muscle cells. We report a case of myoid hamartoma presenting as a large palpable mass in a 28-year-old patient, which was confirmed by surgical excision and pathologic diagnosis.

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“…It may show intralesional microcalcification. It is difficult to be measured in case pseudocapsule is not apparent [3 , 5 , 6 , 13 , 14] .…”

Section: Discussionmentioning

confidence: 99%

Breast hamartoma: Unusual radiological presentation

Mohamed

2020

Radiology Case Reports

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Breast hamartomas are uncommon slowly growing lesions. Imaging findings are specific and usually relay on common mammographic picture of breast within breast appearance. I present a case of 48 years female patient, with recent history of palpable right breast mass, the imaging findings are atypical for breast hamartoma. The unusual presentation of breast hamartomas necessitates biopsy to exclude tumor. Incidence of malignancy is low, however has been reported before. Characteristic radiological imaging can help to minimize unnecessary surgery and morbidity.

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MRI of muscular hamartoma of the breast

Abstract: Muscular hamartoma is a well-demarcated tumour composed of smooth muscle and adipose tissue. We report the MRI findings of a patient with benign breast neoplasm. To the best of our knowledge, its appearance has not been previously reported.

Cited by 9 publications

References 7 publications

Myoid hamartoma of the breast that proved difficult to diagnose: a case report

Myoid hamartoma of the breast that proved difficult to diagnose: a case report

Myoid Hamartoma of the Breast: A Case Report

Breast hamartoma: Unusual radiological presentation

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