Cases reported "Vaginal Neoplasms"

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1/9. Aggressive angiomyxoma: an ultrastructural study of four cases.

    The histogenesis of the aggressive angiomyxoma of the vulvo-vaginal region was studied. Four cases of aggressive angiomyxoma were examined by using light microscopy, electron microscopy, and immunohistochemistry. Myofibroblastic from smooth muscle cell differentiation was distinguished by paying close attention to the structures of the neoplastic cell membrane. Aggressive angiomyxomas exhibit subtle features of smooth muscle differentiation, suggesting that the neoplastic cells differentiate from a multipotent perivascular cell.
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keywords = angiomyxoma
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2/9. Aggressive angiomyxoma of the vulva and vagina. A common problem: misdiagnosis.

    Aggressive angiomyxoma (AA) is a rare myofibroblastic tumor, usually affecting young women. Two patients, one with a vaginal and the other with a vulvar mass underwent surgical intervention with different preoperative diagnoses; the former as vaginal cyst and the latter as vulvar hernia. Unfortunately, the pathological evaluation of the specimens revealed aggressive angiomyxoma. Misdiagnosis of this tumor is a common problem.
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ranking = 0.85714285714286
keywords = angiomyxoma
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3/9. Ovarian sertoli-leydig cell tumor with coexisting vaginal angiomyxoma: case report and review of the literature.

    An extremely rare case of a postmenopausal patient with an ovarian Sertoli-Leydig cell tumour and a coexistent vaginal angiomyxoma is reported. A 71-year-old patient was admitted complaining of abdominal distension. A thorough diagnostic evaluation revealed a large tumour of the right ovary, and an oval-shaped greyish-white polypoid vaginal lesion. Total hysterectomy with bilateral salpingooophorectomy and lymph node sampling was performed, followed by excision of the vaginal lesion. Histological examination showed a Sertoli-Leydig cell tumour of the right ovary, and a vaginal angiomyxoma. Twenty-six months after the operation the patient is well with no signs of recurrence. To the best of our knowledge, no case of coexistence of an ovarian Sertoli-Leydig cell tumour with a myxoma has been previously reported.
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ranking = 0.85714285714286
keywords = angiomyxoma
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4/9. Aggressive angiomyxoma of the vagina: a case report and review of the literature.

    Aggressive angiomyxoma (AA) is a rare mesenchymal tumor of the lower pelvis and genital region, characterized by local infiltration and frequent, even multiple recurrences. In the present paper a case of a small-sized AA of the vagina, in a 55-year-old woman is reported. We describe the histological appearance and the immunohistochemical phenotype of this tumor and discuss its differential diagnosis from other mesenchymal lesions occurring in the pelvic and genital region. Furthermore, we attempt to enlighten the possible mechanisms that govern the pathogenesis and the biological behavior of this "mysterious" neoplasm.
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ranking = 0.71428571428571
keywords = angiomyxoma
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5/9. Aggressive vaginal angiomyxoma mimicking urethral tumor.

    This is a case report of a 32-year-old female patient with a neoplasia mimicking a urethral tumor. Following anterior pelvic exanteration, vulvectomy, bilateral inguinal lymphadenectomy, the pathological study established the diagnosis of aggressive vaginal angiomyxoma, CD-34 labeled.
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ranking = 0.71428571428571
keywords = angiomyxoma
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6/9. Pedunculated aggressive angiomyxoma arising from the vaginal suburethral area: case report and review of literature.

    BACKGROUND: Aggressive angiomyxoma (AA) is an uncommon, slow growing, locally infiltrative but non-metastasizing, distinctive mesenchymal tumor that predominantly affects the pelvis and perineum of premenopausal women. The mainstay of treatment is local excision with tumor-free margins; however, recurrences are common and related to inadequate primary excision. CASE: A pedunculated 3-cm mass arising from the vaginal suburethral area in a 49-year-old premenopausal woman was resected around the base of its pedicle. Microscopic examination revealed numerous blood vessels of various sizes set in myxoid stroma with spindle shaped fibroblasts. Immunohistochemical staining was strongly diffusely positive for vimentin, desmin, estrogen receptor (ER) and progesterone receptor (PR), weakly focally positive for CD34, and negative for S-100 protein, actin and Ki-67. These findings are compatible with the diagnosis of AA. To date, six months after surgery, the patient is alive and without evidence of recurrence. CONCLUSIONS: AA is often clinically misdiagnosed and it is only the microscopic examination strengthened with immunohistochemical staining that definitely and undeniably contributes to the final diagnosis of AA. Based on this case report and on the previously reported five cases of pedunculated AA arising from the vulvovaginal region, including one tumor arising from the vaginal suburethral area, it seems that pedunculated AAs arising from the vulvovaginal region are at negligible risk of recurrence after local excision.
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ranking = 0.71428571428571
keywords = angiomyxoma
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7/9. Recurrent aggressive angiomyxoma of vagina--a case report.

    Aggressive angiomyxoma is a rare tumour, which presents as a painless expanding mass in the vulvo-vaginal region. It usually occurs in 2nd to 3rd decades of life. It behaves like a low-grade sarcoma with high propensity for local spread and recurrence and can involve vulva, perineum, vagina and urinary bladder. It is difficult to differentiate clinically this tumour from other mesenchymal tumours occurring in this region. Microscopically it must be differentiated from malignant tumours with myxoid change, like liposarcoma and myxoid leiomyosarcoma. Hence, histopathologic examination has a central role in diagnosis of this tumour. We are presenting a case of young woman, who came with history of swelling in vulva and perineum. Imaging studies in the perineal region revealed a large pelvic mass. Fine needle aspiration cytology was inconclusive due to scanty material. Enucleation of mass was attempted in first surgery but complete extirpation could not be performed. The swelling recurred within few weeks after surgery and required irradiation. A second surgery, however, was successful in complete removal of the tumour.
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ranking = 0.71428571428571
keywords = angiomyxoma
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8/9. Aggressive angiomyxoma of the vagina.

    Aggressive angiomyxoma is a recently described pathological condition which affects mainly the soft tissues of the pelvis and perineum in women. It is neither encapsulated nor circumscribed and has a tendency for local recurrence. We report a 50-year-old woman who presented with a mass arising within the vaginal wall and extending to the perineum which appeared cystic on ultrasound. The mass was excised and there is no evidence of recurrence 40 months after surgery.
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ranking = 0.71428571428571
keywords = angiomyxoma
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9/9. Comparison of angiomyofibroblastoma and aggressive angiomyxoma in both sexes: four cases composed of bimodal CD34 and factor xiiia positive dendritic cell subsets.

    Aggressive angiomyxoma (AA) is a distinctive, locally aggressive, fibromyxoid tumor of the pelvic and genital soft tissues. AA is of unknown histogenesis but the cytologically bland spindled tumor cells, which surround characteristic variegated blood vessels, show fibroblastic or myofibroblastic features. AA may be related to angiomyofibroblastoma (AMF), another cytologically bland fibromyxoid genital spindle cell tumor with variable myoid differentiation that does not, as a rule, recur. Recently, CD34 primitive fibroblasts and factor xiiia dendritic histiocytes have been found in varying combination in many fibrovascular, fibrohistiocytic, and myxoid soft tissue tumors. Both cells belong to the microvascular unit, a tissue responsible for stromal repair and remodeling and angiogenesis. To determine if these ubiquitous stromal cells participate in the histogenesis of AA and AMF, we examined two scrotal tumors, one AA with multiple recurrences and one AMF, for the presence of CD34 and FXIIIa dendritic cell subsets. For comparison, a vaginal AMF and a pararectal AA in a woman were included. We also studied actins and desmin to detect myofibroblastic differentiation, and, through double labeling studies, assessed hormone receptors and the cell cycle marker Ki 67 in the different cell subsets. The AA showed unusual cytologic atypia and was initially diagnosed as liposarcoma. It massively recurred four times over 12 years, the first time after seven years. The histologic appearance was fairly constant over the years. The scrotal AMF was a circumscribed 6 cm mass in a 37 year old man. In both cases, most tumor cells were wavy and fibrillar, spindled, stellate, or polygonal fibroblast-like CD34 dendritic cells. Depending on the area examined, a 20-50% subset of dendritic cells showed both nuclear and cytoplasmic staining for FXIIIa. Actin cells were rare but vessels had actin myopericytes, although a small focus of the initial male AA was desmin positive. The recurring AA expressed androgen receptors and had Ki 67 index of 10-20% in "hot spots" of the primary and up to 30% in recurrent tumors. The scrotal AMF widely expressed androgen and progesterone receptors with focal estrogen receptor positivity and the Ki 67 index was 10%. Both CD34 fibroblasts and FXIIIa histiocytes were present in the Ki 67 cycling fraction in both the male AA and AMF and both cell types expressed androgen receptors. The female pararectal AA had more focal CD34 reactivity, particularly in perivascular fibroblasts and these cells were admixed with small FXIIIa cells. The vaginal AMF was strongly desmin and variably to weakly CD34 with 20% FXIIIa dendritic cells and Ki 67 index of 2%. The vaginal AMF strongly expressed estrogen, progesterone, and androgen receptors. In conclusion our data suggest that at least some AA and AMF are myxoid fibrohistiocytic tumors composed of CD34 fibroblasts and FXIIIa dendritic histiocytes. In our tumors, neoplastic CD34 dendritic fibroblasts showed predominantly myxo-collagenous differentiation with prominent myofibroblastic differentiation in only one desmin vaginal AMF. Our results support the notion that AMF and AA are part of a morphologic and histogenetic continuum of myxofibrous and myoid tumors that may arise due to interactions between microvascular CD34 fibroblasts and FXIIIa histiocytes. CD34 and FXIIIa reactivity may be underappreciated in these tumors and is more important when considered histogenetically and biologically rather than in classifying individual neoplasms. Hormonal stimulation of proliferating pelvico-gential microvascular dendritic cells appears to play a role in the morphogenesis of both tumors.
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ranking = 0.71428571428571
keywords = angiomyxoma
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