Journal of Pathology and Translational Medicine

Case Study

Mammary-Type Myofibroblastoma: A Report of Two Cases: Soyeon An, Joon Seon Song, Soonchan Park, Jung Won Lee, Kyung-Ja Cho; J Pathol Transl Med. 2016;50(5):385-389. Published online June 6, 2016; DOI: https://doi.org/10.4132/jptm.2016.03.26

9,795 View
135 Download
5 Web of Science
9 Crossref

Mammary-type myofibroblastoma (MFB) is a rare, benign spindle cell neoplasm occurring along the milkline, with extension from the mid-axilla to the medial groin. It is histologically and immunohistochemically identical to MFB of the breast and is part of a spectrum of lesions that includes spindle cell lipoma and cellular angiofibroma. Recently, we experienced two cases of mammary-type MFB involving male patients aged 30 and 58 years, respectively. The tumors were located in the right scrotal sac and in the right axilla. Wide excisions were performed. Microscopically, the masses were composed of haphazardly arranged, variably sized fascicles of bland spindle cells and were admixed with mature fat tissue. The spindle cells in both cases showed immunopositivity for desmin and CD34 and negativity for smooth muscle actin. Loss of retinoblastoma (RB)/13q14 loci is a characteristic genetic alteration of mammary-type MFB, and we identified loss of RB protein expression by immunohistochemical staining. We emphasize the importance of awareness of this rare neoplasm when a spindle cell neoplasm is accompanied by desmin immunopositivity. The second patient was alive without recurrence for 20 months, and the first patient had not been followed.

Citations

Citations to this article as recorded by

Myofibroblastoma in the Liver: A Case Report and Review of Literature
Mohan Narasimhamurthy, Deepika Savant, Lauren Shreve, Mark A. Rosen, Major Kenneth Lee, Kumarasen Cooper, Emma E. Furth, Paul J. Zhang, Zhaohai Yang
International Journal of Surgical Pathology.2023; 31(8): 1559. CrossRef
Mammary-type myofibroblastoma of the thigh mimicking liposarcoma
Natasha Akhlaq, Bibianna Purgina, Joel Werier, Zaid Jibri
Skeletal Radiology.2022; 51(2): 441. CrossRef
Mammary‐type myofibroblastoma of the perineum: Typical or rare location?
Akihiro Naito, Yuta Takeshima, Sayuri Takahashi
IJU Case Reports.2022; 5(3): 161. CrossRef
Identifying the uncommon solitary fibrous tumour in a rare location – A case report
Shanthi Periasamy, Anita Mani, Graham J. Stewart, Jacob P. Hampton
International Journal of Surgery Case Reports.2022; 94: 107058. CrossRef
Mammary-Type Myofibroblastoma of Perineal Region: A Case Report and Literature Review
晓虹江
Advances in Clinical Medicine.2021; 11(04): 1722. CrossRef
A case of mammary-type myofibroblastoma of the inguinal region
Atsushi Ishihara, Takeo Yasuda, Yukari Sakae, Masayuki Sakae, Tooru Hamada, Hideki Tsukazaki, Takashi Tsukazaki, Masaru Furumoto
International Journal of Surgery Case Reports.2018; 53: 464. CrossRef
Radiologic presentation of a myofibroblastoma of the adult male breast
Evan Rochlis, Pauline Germaine
Radiology Case Reports.2017; 12(3): 439. CrossRef
Imaging features of mammary-type myofibroblastoma of soft tissue: a case series with literature review
Gokhan Kuyumcu, Brian P. Rubin, Carl Winalski
Skeletal Radiology.2017; 46(9): 1283. CrossRef
Mammary-type myofibroblastoma of the psoas
Kamran Khan, Arun A Mavanur
BMJ Case Reports.2016; : bcr2016217862. CrossRef

Short Case Report

Intranodal Palisaded Myofibroblastoma with Desmin Expression : A Brief Case Report.: Dong Chul Kim, Tae Hoon Kang, Min A Kim, Yoon Kyung Jeon; Korean J Pathol. 2009;43(3):263-265.; DOI: https://doi.org/10.4132/KoreanJPathol.2009.43.3.263

2,728 View
23 Download

Abstract PDF: Intranodal palisaded myofibroblastoma is a rare benign mesenchymal neoplasm of the lymph node. It is characterized by intranodal spindle cell proliferation along with amianthoid fibers and prominent hemorrhage. It has been rarely reported in South Korea. We report here on a case of palisaded myofibroblastoma that arose in the left inguinal lymph node. The tumor mass was well demarcated, and it was composed of a proliferation of benign-looking spindle cells. It showed focal hemorrhage and a fibrous pseudocapsule. The tumor cells displayed little pleomorphism, no mitotic count, and characteristic palisading nuclei and amianthoid fibers. The tumor cells were positive for smooth muscle actin, vimentin, and also for desmin, but they were negative for S-100 protein, supporting the diagnosis of myofibroblastoma.

Case Reports

Angiomyofibroblastoma of Vulva: A case report.: Hye Kyung Lee, Myung Jin Joo, Kwang Min Lee, Dong Kyu Chung; Korean J Pathol. 1995;29(4):530-532.

1,460 View
17 Download

Abstract PDF: Angiomyofibroblastoma of the vulva is a rare mesenchymal tumor. It has been diagnostically confused with aggressive angiomyxoma which has a somewhat different clinical course and therapy. Herein we report a case of angiomyofibroblastoma of the vulva in a 46-year-old female. Microscopically, there were alternating hypercellular and hypocelluar edematous zones in which abundant capillary blood vessels were irregularly distributed. Spindle, plump spindle, and oval stromal cells were concentrated around the blood vessels, or loosely dispersed in the hypocellular area. Immunohistochemically, the stromal cells were positive for desmin, vimentin, muscle-specific actin and weakly positive for S-100 protein. Ultrastructural studies showed well developed rough endoplasmic reticulum, abundant intermediate filaments, and pinocytic vesicles in the stromal cells.

Angiomyofibroblastoma of the Vulva: A case report.: Mee Sook Roh, Hea Kyoung Hur, Sook Hee Hong, Sang Kap Kim, Young Cheol Baek, Hwa Sook Moon; Korean J Pathol. 1996;30(4):344-346.

1,555 View
15 Download

Abstract PDF: Angiomyofibroblastoma is a distinctive, hitherto uncharacterized, benign soft tissue tumor of the vulva with histology similar to an aggressive pelvic angiomyxoma. It can be distinguished from an aggressive angiomyxoma by its circumscribed borders, higher cellularity, more numerous blood vessels, the frequent presence of plump stromal cells, minimal stromal mucin, and rarity of erythrocyte extravasation. We experienced a case of angiomyofibroblastoma of the vulva occurring in a 45-year-old woman. The lesion was a well-defined but not encapsulated mass, 4.5x4.2 cm. Histologically the mass was characterized by alternating hypercellular and hypocellular edematous zones in which abundant blood vessels were irregularly distributed. Immunohistochemically, the spindled, plump spindled, and oval stromal cells were reactive for vimentin and desmin, but not for cytokeratin, or S-100 protein.

Myofibroblastoma of the Male Breast: Report of a case.: Ji Eun Kim, Yeon Lim Suh, Howe Jung Ree; Korean J Pathol. 1996;30(7):623-629.

1,597 View
10 Download

Abstract: A case of myofibroblastoma of the breast in a 55-year-old man is described. Myofibroblastoma is a relatively recently recognized benign stromal tumor, and predominantly occurs in middle aged men. The pateint presented with a nontender firm mass in his right breast. Fine needle aspiration biopsy revealed bland looking stromal cell clusters without epithelial cells. Simple excision was done and the patient discharged uneventfully. The mass was well demarcated, lobulated and sligtly myxoid. Microscopically bipolar elongated spindle cell fascicles with interspersing broad collagen bands are so characteristic. Ultrastructurally the tumor cell show features of fibroblast as well as smooth muscle cell.

Recurred Angiomyofibroblastoma of the Vulva: Report of a case.: Do Youn Park, Ji Yeon Kim, OK Hyeon Kim, Hwa Sun Lee, Mee Young Sol, Kang Suek Suh, Sun Kyung Lee; Korean J Pathol. 1996;30(10):947-950.

1,796 View
21 Download

Abstract PDF: Angiomyofibroblastoma is a rare, benign mesenchymal tumor of the vulva. Since it was described in 1992 by Fletcher, 15 cases have been reported in literature. We recently experienced a recurred angiomyofibroblastoma of the vulva. A 45-year-old woman was presented initially in 1991 with a mass of labium major and local excision of tumor mass had been performed. A histologic diagnosis was made of angiomyxoma, but this diagnosis was revised to angiomyofibroblastoma by the authors. The recurred mass was well circumscribed, measuring 2.5x1.6x1.5cm in dimensions. Microscopically the tumor was characterized by high cellularity, numerous blood vessels(which lack prominent hyalinization), and plump stromal cells. Immunohistochemically, the stromal cells were reactive for vimentin and desmin, but not alpha-smooth muscle actin, or S-100 protein. We thought that this case was a recurred angiomyofibrblastoma of the vulva due to incomplete surgical excision.

Epithelioid Myofibroblastoma of Mammary-type in Chest Wall: A Case Report.: Hyun Jung Kim, Hunkyung Lee, Ok Jun Lee, Kyung Ja Cho, Jae Y Ro; Korean J Pathol. 2005;39(2):130-133.

1,729 View
18 Download

Abstract PDF: Mammary-type myofibroblastoma of the soft tissue is a benign mesenchymal tumor, and it is a recently established clinical entity. We report a case of myofibroblastoma of the chest wall with a prominent epithelioid feature, that occurred in a 12-year old female. Although the lesion occurred in the breast area, there was no breast parenchyma in or around the mass, which favored soft tissue of the chest wall origin. The tumor was immunohistochemically identical to the mammary-type myofibroblastoma with diffuse and strong positivity against CD34 and desmin. The myoepithelial differentiation of the tumor was further supported by the electron microscopic analysis. This case indicates that mammary-type myofibroblastoma can occur in a young girl. The mammary-type myofibroblastoma should be considered a differential diagnosis, among epithelioid soft tissue neoplasms in the chest wall when the proper immunohistochemical work-up is done.

First
Prev
Page of 1
Next
Last

Search