A novel collision tumour of myofibroblastoma and low-grade adenosquamous carcinoma in breast

Abstract Background Myofibroblastoma (MFB) and low-grade adenosquamous carcinoma (LGASC) are rare tumours in the breast, respectively. However, a collision tumour of the two types has never been reported. Case presentation A 42-year-old female presented with a palpable mass in diameter of about 2.5 ...

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Main Authors: Guang-Zhi Yang, Shang-Hua Liang, Xiao-Hong Shi
Format: Article
Language:English
Published: BMC 2020-06-01
Series:Diagnostic Pathology
Subjects:
Online Access:http://link.springer.com/article/10.1186/s13000-020-00992-2
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author Guang-Zhi Yang
Shang-Hua Liang
Xiao-Hong Shi
author_facet Guang-Zhi Yang
Shang-Hua Liang
Xiao-Hong Shi
author_sort Guang-Zhi Yang
collection DOAJ
description Abstract Background Myofibroblastoma (MFB) and low-grade adenosquamous carcinoma (LGASC) are rare tumours in the breast, respectively. However, a collision tumour of the two types has never been reported. Case presentation A 42-year-old female presented with a palpable mass in diameter of about 2.5 cm in the left breast. Morphologically, the lesion was predominately composed of bland spindle cells admixed with some islands of mature adipocytes and a few epithelial elements dispersing in infiltrating way which formed both tubule and solid structures. The mass showed low positive index of Ki-67. The spindle cells were strongly and diffusely positive for CD34, SMA, desmin, ER and PR. The epithelial elements were positive for CK and EMA, and negative for ER and PR completely. CK5/6 and P63 were positive in the outer-layer of the tubules and nearly all the cells of the solid nests. Conclusions A collision tumour of MFB and LGASC in breast is extremely rare and either component is supposed to be not overlooked. Excision and close follow-up are advised.
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spelling doaj.art-e35a87166d674d31af44731da070926a2022-12-22T01:30:34ZengBMCDiagnostic Pathology1746-15962020-06-011511610.1186/s13000-020-00992-2A novel collision tumour of myofibroblastoma and low-grade adenosquamous carcinoma in breastGuang-Zhi Yang0Shang-Hua Liang1Xiao-Hong Shi2Department of Pathology, Beijing Dian Medical Test Laboratory Co. LtdDepartment of Pathology, Beijing Dian Medical Test Laboratory Co. LtdDepartment of Pathology, Beijing Dian Medical Test Laboratory Co. LtdAbstract Background Myofibroblastoma (MFB) and low-grade adenosquamous carcinoma (LGASC) are rare tumours in the breast, respectively. However, a collision tumour of the two types has never been reported. Case presentation A 42-year-old female presented with a palpable mass in diameter of about 2.5 cm in the left breast. Morphologically, the lesion was predominately composed of bland spindle cells admixed with some islands of mature adipocytes and a few epithelial elements dispersing in infiltrating way which formed both tubule and solid structures. The mass showed low positive index of Ki-67. The spindle cells were strongly and diffusely positive for CD34, SMA, desmin, ER and PR. The epithelial elements were positive for CK and EMA, and negative for ER and PR completely. CK5/6 and P63 were positive in the outer-layer of the tubules and nearly all the cells of the solid nests. Conclusions A collision tumour of MFB and LGASC in breast is extremely rare and either component is supposed to be not overlooked. Excision and close follow-up are advised.http://link.springer.com/article/10.1186/s13000-020-00992-2Collision tumourMyofibroblastomaLow-grade adenosquamous carcinomaBreast
spellingShingle Guang-Zhi Yang
Shang-Hua Liang
Xiao-Hong Shi
A novel collision tumour of myofibroblastoma and low-grade adenosquamous carcinoma in breast
Diagnostic Pathology
Collision tumour
Myofibroblastoma
Low-grade adenosquamous carcinoma
Breast
title A novel collision tumour of myofibroblastoma and low-grade adenosquamous carcinoma in breast
title_full A novel collision tumour of myofibroblastoma and low-grade adenosquamous carcinoma in breast
title_fullStr A novel collision tumour of myofibroblastoma and low-grade adenosquamous carcinoma in breast
title_full_unstemmed A novel collision tumour of myofibroblastoma and low-grade adenosquamous carcinoma in breast
title_short A novel collision tumour of myofibroblastoma and low-grade adenosquamous carcinoma in breast
title_sort novel collision tumour of myofibroblastoma and low grade adenosquamous carcinoma in breast
topic Collision tumour
Myofibroblastoma
Low-grade adenosquamous carcinoma
Breast
url http://link.springer.com/article/10.1186/s13000-020-00992-2
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