Primary low-grade extrauterine endometrial stromal sarcoma: analysis of 10 cases with a review of the literature

Vaginal Endometrial Stroma Sarcoma: A Case Report of A Rare Disease

Vaginal endometrial stromal sarcoma (VESS) arising in the vagina is an extremely rare extrauterine endometrial stromal sarcoma, Stroma Sarcoma. To the best of our knowledge, there have been only a few reported cases in the literature. Therefore, we herein report a case of VESS originating in the vagina. A 27-year-old woman complained of heavy and intermittent vaginal bleeding and abdominal swelling all of six months duration. A mass that was firm to hard in consistency was found in the middle and upper segments of the anterior, right lateral, and posterior fornices and wall of the vagina. An excisional biopsy was taken and the immunohistochemistry result revealed VESS. A cystoscopy was done which revealed polypoid metastatic nodules in the bladder (this put the stage of the disease at IV). She also had laparotomy following features of mechanical obstruction from previous pelvic and intraperitoneal adhesions which were formed from previous laparotomy.

Low-grade extrauterine endometrial stromal sarcoma arising from vaginal endometriosis: a case report and literature review

Extrauterine endometrial stromal sarcoma arising from malignant transformation of the vagina is an extremely rare condition. The diagnosis is often difficult as the symptomatology and pathological features overlap with that of pelvic endometriosis. A 38 years old female presented with complaints of dyspareunia, dysmenorrhea, and painful defecation along with blood-stained vaginal discharge for a year. Examination revealed the presence of multiple brownish irregular nodules in posterior vaginal fornix and fixed tender nodules which on biopsy revealed florid vaginal endometriosis. She improved symptomatically on medical therapy. After 18 months of diagnosis, she presented again with a necrotic growth in posterior fornix, which on repeat biopsy revealed a low-grade endometrial stromal sarcoma. Laparotomy revealed a 7×5 cm mass in the pouch of Douglas, infiltrating the posterior vaginal wall and rectum. A complete cytoreductive surgery with retrograde hysterectomy, excision of posterior vaginal wall and rectosigmoid resection was done. The patient is disease-free at a follow-up of 65 months.

Adenomyosis and Its Possible Malignancy: A Review of the Literature

Cancer arising from adenomyosis is very rare, with transformation occurring in only 1% of cases and in older individuals. Adenomyosis, endometriosis and cancers may share a common pathogenic mechanism that includes hormonal factors, genetic predisposition, growth factors, inflammation, immune system dysregulation, environmental factors and oxidative stress. Endometriosis and adenomyosis both exhibit malignant behaviour. The most common risk factor for malignant transformation is prolonged exposure to oestrogens. The golden standard for diagnosis is histopathology. Colman and Rosenthal emphasised the most important characteristics in adenomyosis-associated cancer. Kumar and Anderson emphasised the importance of demonstrating a transition between benign and malignant endometrial glands in cancer arising from adenomyosis. As it is very rare, it is difficult to standardize treatment. In this manuscript, we try to emphasize some aspects regarding the management strategy, as well as how heterogenous the studies from the literature are in terms of prognosis in both cancers that develop from adenomyosis or those that are only associated with adenomyosis. The pathogenic mechanisms of transformation remain unclear. As these types of cancer are so rare, there is no standardised treatment. A novel target in the diagnosis and treatment of gynaecological malignancies associated with adenomyosis is also being studied for the development of new therapeutic concepts.

Utero-ovarian low grade endometrial stromal sarcoma, a case report

INTRODUCTION

Endometrial stromal sarcoma (ESS) is a rare malignancy of uterine in middle aged women. There are numerous subtypes for ESS which share the same clinical picture of uterine bleeding and pelvic pain. Consequently, diagnosis and treatment modalities of LG-ESS with metastasis are challenging. However, both molecular and immunological study of samples can be useful.

CASE PRESENTATION

In this case study, we report a 52-year-old woman presenting with the chief complaint of unusual uterine bleeding. There was no specific finding in her past medical history. The CT study revealed enlarged bilateral ovary with a significantly large left ovarian mass and suspicious mass in uterus. By the diagnosis of ovarian mass, patient went under total abdominal hysterectomy with bilateral salpingo-oophorectomy (BSO), greater omentectomy, and appendectomy followed by post-op hormone therapy. Her follow-up was uneventful. The IHC and pathological study of samples revealed incidental LG-ESS uterus mass with metastasis to ovaries despite her primary diagnosis.

DISCUSSION

LG-ESS has low metastasis rate. Surgical modalities and neoadjuvant therapies are recommended base on the stage of ESS. In the following study, we represent a case of incidental LG-ESS with bilateral ovarian invasion who was initially diagnosed as an ovarian mass.

CONCLUSION

Our patient was successfully managed by surgical intervention. Despite scarcity of LG-ESS, it is advised to consider LG-ESS as a differential diagnosis in management of patients with a uterus mass with bilateral ovarian involvement.

Extrauterine Endometrial Stromal Sarcoma Mimicking Colorectal Cancer With Metastases

ABSTRACT

Extrauterine endometrial stromal sarcoma (EESS) is extremely rare, especially with the colorectum involvement. We describe 18 F-FDG PET/CT findings of EESS in the sigmoid colon and rectum in a 46-year-old woman who complained diarrhea. 18 F-FDG PET/CT revealed multiple hypermetabolic lesions in the abdomen and pelvis, including the sigmoid colon and rectum. Therefore, colorectal cancer with metastases was initially suspected; however, ultimately low-grade EESS was pathologically confirmed. Widespread EESS with intestine involvement revealed by 18 F-FDG PET/CT should be carefully distinguished from colorectal cancer with metastases.