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  • 1
    In: Surgical Case Reports, Springer Science and Business Media LLC, Vol. 8, No. 1 ( 2022-09-09)
    Abstract: Epithelioid hemangioendothelioma (EHE) is a rare and slow-growing malignant vascular neoplasm composed of epithelioid endothelial cells within a distinctive myxohyaline stroma. It most commonly involves somatic soft tissue, lungs, liver and bone. Herein, we describe a case of EHE arising in the axillary region. Case presentation A 61-year-old man was under observation for multiple hepatic hemangiomas. Fluorodeoxyglucose–positron emission tomography/computed tomography showed specific uptake in a right axillary tumor. The patient was referred to our department for further investigation of the axillary tumor. An elastic-soft and poorly mobile tumor was palpable in the right axilla. Contrast-enhanced computed tomography showed a right axillary tumor and enlarged hepatic hemangiomas. In addition, multiple nodules in both lungs, a left renal angiomyolipoma, and left adrenal adenoma were revealed. Ultrasonography showed masses in both lobes of the thyroid gland, and a 30-mm lobulated hypoechoic mass in the axilla with well-defined and rough borders, showing internal heterogeneity. Fine-needle aspiration cytology was performed on the thyroid and axillary tumors: the thyroid tumor was class V, raising suspicion of papillary thyroid cancer (PTC); the left superior internal jugular node was class V, raising suspicion of metastasis of PTC; and the axillary tumor was class III, raising suspicion of a mesenchymal tumor with few epithelioid cells. The multiple lung nodules were diagnosed as metastatic tumors derived from thyroid cancer. We diagnosed these diseases as PTC of T1b(m)N1bM1(lung) Stage IVB and a right axillary tumor of unclear origin. However, it was assumed to be a primary mesenchymal tumor or a lymph node metastasis from lung cancer or occult breast cancer. We performed total thyroidectomy, left cervical lymph node dissection, and right axillary tumor excision. Histopathologic examination revealed the thyroid tumor as a PTC and the axillary tumor as an EHE. The EHE showed nuclear atypia, necrosis and high mitotic figures. Hence, it was considered to be a high-risk EHE. Conclusions We experienced a rare primary subcutaneous axillary EHE with metastatic thyroid cancer in the lung. Since our case was classified as a high-risk EHE, a close follow-up would be appropriate.
    Type of Medium: Online Resource
    ISSN: 2198-7793
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2022
    detail.hit.zdb_id: 2809613-7
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  • 2
    In: Breast Care, S. Karger AG, Vol. 18, No. 2 ( 2023), p. 122-129
    Abstract: 〈 b 〉 〈 i 〉 Introduction: 〈 /i 〉 〈 /b 〉 Mastitis is the inflammation of the mammary gland that mainly occurs during the lactation period and requires antibiotic treatment with little evidence for its efficacy. We investigated the effect of the National Action Plan for antimicrobial resistance aiming for appropriate antimicrobial stewardship on broad-spectrum antibiotics administration for mastitis despite the lack of a disease-specific antimicrobial agents manual. 〈 b 〉 〈 i 〉 Methods: 〈 /i 〉 〈 /b 〉 Using a large nationwide database, an interrupted time-series analysis was performed using data from 34,340 female patients who received antibiotics for mastitis between April 2012 and March 2020. This study compared the trend of outcomes before and after the publication date of the National Action Plan (April 2016). The outcomes were the proportion of broad-spectrum and first-choice narrow-spectrum antibiotic administration and surgical drainage within 30 days after the administration. 〈 b 〉 〈 i 〉 Results: 〈 /i 〉 〈 /b 〉 Broad-spectrum antibiotics were administered in 70% of the cases before and 67% of the cases after the National Action Plan publication date. The trend of broad-spectrum antibiotics administration significantly changed at the publication (−2.6% [95% confidence interval, −3.9% to −1.3%], 〈 i 〉 p 〈 /i 〉 & #x3c; 0.001) and the administration decreased after the publication (1.9% annual decrease, 〈 i 〉 P 〈 /i 〉 〈 sub 〉 trend 〈 /sub 〉 & #x3c; 0.001). The trend of first-choice antibiotics administration also changed at the publication (1.3% [0.1–2.4%], 〈 i 〉 p 〈 /i 〉 = 0.028) and the administration increased after the publication (1.3% annual increase, 〈 i 〉 P 〈 /i 〉 〈 sub 〉 trend 〈 /sub 〉 & #x3c; 0.001). The occurrence of surgical drainage was stable during the study period. 〈 b 〉 〈 i 〉 Conclusion: 〈 /i 〉 〈 /b 〉 Despite the lack of a disease-specific antimicrobial manual, the publication of the National Action Plan improved antimicrobial stewardship for mastitis without any impact on a surgical treatment course.
    Type of Medium: Online Resource
    ISSN: 1661-3791 , 1661-3805
    Language: English
    Publisher: S. Karger AG
    Publication Date: 2023
    detail.hit.zdb_id: 2205941-6
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  • 3
    In: Breast Cancer Research and Treatment, Springer Science and Business Media LLC, Vol. 195, No. 3 ( 2022-10), p. 289-299
    Type of Medium: Online Resource
    ISSN: 0167-6806 , 1573-7217
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2022
    detail.hit.zdb_id: 2004077-5
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  • 4
    In: Breast Cancer, Springer Science and Business Media LLC, Vol. 30, No. 1 ( 2023-01), p. 36-45
    Type of Medium: Online Resource
    ISSN: 1340-6868 , 1880-4233
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2023
    detail.hit.zdb_id: 2394259-9
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  • 5
    In: Proceedings of the National Academy of Sciences, Proceedings of the National Academy of Sciences, Vol. 116, No. 2 ( 2019-01-08), p. 625-630
    Abstract: Cancer stem-like cells (CSCs) are expanded in the CSC niche by increased frequency of symmetric cell divisions at the expense of asymmetric cell divisions. The symmetric division of CSCs is important for the malignant properties of cancer; however, underlying molecular mechanisms remain largely elusive. Here, we show a cytokine, semaphorin 3 (Sema3), produced from the CSC niche, induces symmetric divisions of CSCs to expand the CSC population. Our findings indicate that stimulation with Sema3 induced sphere formation in breast cancer cells through neuropilin 1 (NP1) receptor that was specifically expressed in breast CSCs (BCSCs). Knockdown of MICAL3 , a cytoplasmic Sema3 signal transducer, greatly decreased tumor sphere formation and tumor-initiating activity. Mechanistically, Sema3 induced interaction among MICAL3, collapsin response mediator protein 2 (CRMP2), and Numb. It appears that activity of MICAL3 monooxygenase (MO) stimulated by Sema3 is required for tumor sphere formation, interaction between CRMP2 and Numb, and accumulation of Numb protein. We found that knockdown of CRMP2 or Numb significantly decreased tumor sphere formation. Moreover, MICAL3 knockdown significantly decreased Sema3-induced symmetric divisions in NP1/Numb-positive BCSCs and increased asymmetric division that produces NP1/Numb negative cells without stem-like properties. In addition, breast cancer patients with NP1-positive cancer tissues show poor prognosis. Therefore, the niche factor Sema3-stimulated NP1/MICAL3/CRMP2/Numb axis appears to expand CSCs at least partly through increased frequency of MICAL3-mediated symmetric division of CSCs.
    Type of Medium: Online Resource
    ISSN: 0027-8424 , 1091-6490
    RVK:
    RVK:
    Language: English
    Publisher: Proceedings of the National Academy of Sciences
    Publication Date: 2019
    detail.hit.zdb_id: 209104-5
    detail.hit.zdb_id: 1461794-8
    SSG: 11
    SSG: 12
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  • 6
    In: Surgical Case Reports, Springer Science and Business Media LLC, Vol. 5, No. 1 ( 2019-12)
    Abstract: Angiosarcoma of the breast is rare. It carries a poor prognosis because of its high risk of local recurrence and distant metastases. Presently, there are still no established systemic therapies. Thus, the main treatment strategy for breast angiosarcoma is complete resection. This underscores the importance of closely monitoring the spread of the tumor lesion, particularly for multifocal angiosarcoma, and to plan an optimal operative procedure. We herein present the successful surgical treatment of a rare case of multifocal primary breast angiosarcoma. Case presentation A 43-year-old woman visited our hospital with a growing lump on her right breast accompanied by pain. Clinical and radiological examinations revealed a well-circumscribed 40-mm-diameter tumor at the inner lower quadrant of her right breast. Histological examination of a needle biopsy specimen revealed angiosarcoma. Based on a precise evaluation of the tumor by contrast-enhanced MRI and contrast-enhanced CT scan, a wide local excision with sufficient margins was performed. In the resected specimen, three discontinuous small lesions of angiosarcoma were observed around the main tumor. Therefore, total mastectomy was additionally performed. Pathological examination revealed two other small nodules of angiosarcoma in the remnant right breast, which appeared to be close but not continuous to the defective part of the initial resection. Postoperative follow-up at 1 year showed no signs of recurrence or distant metastasis. Multifocal primary breast angiosarcoma is extremely rare with only two previous reports describing its multifocality. Conclusions Owing to its rarity, a standardized surgical treatment for breast angiosarcoma remains controversial. Our case suggests that primary breast angiosarcoma may occasionally present with multifocal tumor. Thus, it is important to keep in mind the multifocality of breast angiosarcoma when assessing its spread by diagnostic imaging and when planning the surgical strategy.
    Type of Medium: Online Resource
    ISSN: 2198-7793
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2019
    detail.hit.zdb_id: 2809613-7
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