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      A Case Report of Vulvar Leiomyoma: A Rare Pathological Entity

      case-report
      Author(s): 1 , , 1 , 2
      Editor(s): ,
      Publication date (Electronic, pub):
      Publication date (Electronic, collection):
      Journal: Cureus
      Publisher: Cureus
      Keywords: labia minora, bartholin cysts, vulvar mass, vulvar lesions, labial leiomyoma

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          Abstract

          Smooth muscle tumors, known as leiomyomas, are benign and can grow anywhere in the body, but the uterine myometrium is the most common site. Vulvar leiomyomas are uncommon and rare. We report a case of a 25-year-old female P (para) 1 L (live) 1 with a previous normal vaginal delivery, who presented two painless swelling of in vulva for one year. The urethral meatus deviated to the left side. After surgical excision, a histopathological examination was performed that confirmed leiomyoma. The patient was discharged after an uneventful postoperative period. A vulvar leiomyoma tumor is often mistaken for a Bartholin cyst, and it is challenging to distinguish between benign and malignant types of vulvar leiomyomas, making diagnosis extremely challenging.

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          Leiomyomas beyond the uterus: unusual locations, rare manifestations.

          Najla Fasih, Alampady K Prasad Shanbhogue, David MacDonald … (2015)
          Uterine leiomyomas affect 20%-30% of women older than 35 years. Extrauterine leiomyomas are rarer, and they present a greater diagnostic challenge: These histologically benign tumors, which originate from smooth muscle cells, usually arise in the genitourinary tract (in the vulva, ovaries, urethra, and urinary bladder) but may arise in nearly any anatomic site. In addition, unusual growth patterns may be seen, including benign metastasizing leiomyoma, disseminated peritoneal leiomyomatosis, intravenous leiomyomatosis, parasitic leiomyoma, and retroperitoneal growth. In the presence of such a pattern, a synchronous uterine leiomyoma or a previous hysterectomy for removal of a primary uterine tumor may be indicative of the diagnosis. However, some extrauterine leiomyomas may mimic malignancies, and serious diagnostic errors may result. The most useful modalities for detecting extrauterine leiomyomas are ultrasonography, computed tomography, and magnetic resonance (MR) imaging. The superb contrast resolution and multiplanar capabilities of MR imaging make it particularly valuable for characterizing these tumors, which usually show low signal intensity similar to that of smooth muscle on T2-weighted images. The radiologist's recognition of this and other characteristic features may help steer the clinician toward timely, appropriate management and away from unnecessary, potentially harmful treatment.
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            Smooth-muscle tumors of the vulva. A clinicopathological study of 25 cases and review of the literature.

            Paul R Young, F Koerner, Fiona G. G. Nielsen … (1996)
            The clinical and pathological features of 25 smooth-muscle tumors of the vulva were analyzed. The patients ranged in age from 17 to 67 (mean, 37.6) years; two were pregnant. Twenty-three tumors were 1.5 to 16 (mean, 5.2) cm in greatest dimension; the size of two tumors was unknown. Microscopic examination showed that 16 tumors were circumscribed, six had focally infiltrative margins, and the margins could not be evaluated in three tumors. Fourteen tumors were composed mainly of spindle cells; two of these tumors had prominent myxoid stroma. Seven tumors were predominantly epithelioid and had a prominent hyalinized or myxoid stroma; often the cells had a plexiform pattern. Four tumors contained an approximately equal number of epithelioid and spindle cells. Ten tumors had mild, nine moderate, and six severe cytologic atypia. Mitotic figures ranged from 0 to 10 (average, 1.8) per 10 high-power fields (hpf). Immunohistochemically, all the tumors stained for one or more muscle markers. Thirteen of 17 tumors were positive for estrogen receptors, and 16 of 18 were positive for progesterone receptors. Follow-up information ranging from 1 month to 19 years (average, 5 years) was available in 19 cases. Four tumors recurred locally, and one patient with recurrent tumor died of metastases 7 months after the initial operation. We propose an expanded criteria to distinguish between leiomyomas and leiomyosarcomas of the vulva. Tumors that manifest three or all of the four following features should be considered sarcomas: > or = 5 cm in greatest dimension, infiltrative margins, > or = 5 mitotic figures per 10 hpf, and moderate to severe cytologic atypia. Those that have only one of these characteristics should be diagnosed as leiomyoma, and those that exhibit only two of these features should be considered benign but atypical leiomyomas. The sarcomas should be excised with widely negative margins; the leiomyomas and the atypical leiomyomas should be excised conservatively, with long-term, careful follow-up.
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              Myxoid Epithelial Leiomyoma of the Vulva: A Case Report and Literature Review

              Ting Zhao, Xishi Liu, Yuan-Yuan Lu (2015)
              Leiomyoma of vulva is rare, and usually misdiagnosed clinically as Bartholin cyst. It usually presents spindle-shaped tumor cells, but some rare cases consisted mainly of atypical epithelioid tumor cells. We report here a case of 30-year-old woman consulting with a vulvar mass of 7 cm in the Bartholin glands area. The lesion was surgically excised with its capsule completely. Pathological examination and immunochemistry showed characteristic of epithelioid leiomyoma with myxoid stroma with both estrogen receptor (ER) and progesterone receptor (PR) staining negative, which was really rare as only 2 cases of vulvar leiomyoma with both ER and PR were reported before.
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                Author and article information

                Journal
                Journal ID (nlm-ta): Cureus
                Journal ID (iso-abbrev): Cureus
                Journal ID (issn): 2168-8184
                Title: Cureus
                Publisher: Cureus (Palo Alto (CA) )
                ISSN (Electronic): 2168-8184
                Publication date (Electronic, pub): 2 August 2023
                Publication date (Electronic, collection): August 2023
                Volume: 15
                Issue: 8
                Electronic Location Identifier: e42878
                Affiliations
                [1 ] Obstetrics and Gynaecology, Datta Meghe Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
                [2 ] Microbiology, Jawarhal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
                Author notes
                Article
                DOI: 10.7759/cureus.42878
                PMC ID: 10474907
                PubMed ID: 37664286
                SO-VID: 766e0b13-fe2f-45e2-aa00-0dd2c0b9948a
                Copyright © Copyright © 2023, Kalambe et al.
                License:

                This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                History
                Date received : 19 April 2023
                Date accepted : 2 August 2023
                Categories
                Subject: Obstetrics/Gynecology

                Keywords: labia minora,bartholin cysts,vulvar mass,vulvar lesions,labial leiomyoma
                Data availability:
                Keywords: labia minora, bartholin cysts, vulvar mass, vulvar lesions, labial leiomyoma

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