1/19. Retroperitoneal mucinous cystadenoma.A case of retroperitoneal mucinous cystadenoma histologically confirmed in a 21-year-old woman is reported. Although ultrasound, CT and MR detected the tumor, a preoperative diagnosis could not be established by imaging methods. The cystic tumor was removed and microscopic examination revealed a mucinous cystadenoma. Mullerian mesothelial metaplasia of peritoneal invagination into the retroperitoneal space is the most likely explanation for the histogenesis of these tumors.- - - - - - - - - - ranking = 1keywords = cystadenoma (Clic here for more details about this article) |
2/19. Retroperitoneal mucinous cystadenoma.Primary retroperitoneal mucinous cystadenoma is an uncommon tumor found exclusively in women. Herein, we describe a patient who had resection of a large retroperitoneal cystic mass. Histologic, immunohistochemical, and electron microscopic examination of the lining epithelial cells showed features of mesothelial cells in addition to ovarian mucinous cystadenoma. These findings suggest that these tumors arise from inclusions of mesothelial cells and subsequent mucinous metaplasia of the lining cells to form a cystadenoma. Estrogen receptors may be implicated in tumor promotion, explaining the occurrence exclusively in women.- - - - - - - - - - ranking = 1.1666666666667keywords = cystadenoma (Clic here for more details about this article) |
3/19. Huge primary mucinous cystadenoma of the retroperitoneum mimicking a left ovarian tumor.Primary mucinous cystic tumors of the retroperitoneum are rarely encountered and have been reported in approximately 25 cases in the literature. The histogenesis of primary mucinous cystadenomas is not clear. Most authors suggest that it develops through mucinous metaplasia in a pre-existing mesothelium-lined cyst. Surgery is the only treatment. In this report we present an additional case of primary retroperitoneal mucinous cystadenoma in a 44-year-old female.- - - - - - - - - - ranking = 1keywords = cystadenoma (Clic here for more details about this article) |
4/19. Retroperitoneal mucinous cystadenoma.INTRODUCTION: Retroperitoneal mucinous cystadenomas are rare tumors. Only 25 cases have been reported in the English literature until 2002. The histogenesis is unclear, diagnosis is never made preoperatively and surgery is the only treatment. CASE REPORT: We report an additional case.- - - - - - - - - - ranking = 0.83333333333333keywords = cystadenoma (Clic here for more details about this article) |
5/19. Primary retroperitoneal mucinous cystadenoma. A case report and brief review of the literature.Retroperitoneal mucinous cystadenomas are extremely rare tumors found exclusively in women. An additional case of retroperitoneal mucinous cystadenoma histologically confirmed in a 41-year- old woman is reported herein. Computed tomographic (CT) scanning showed a cystic mass, 21 x 16 cm in size, in the right retroperitoneal space. Removal of the cystic tumor was performed without any other additional procedures, and further histological diagnosis was confirmed as primary mucinous cystadenoma of borderline type. Histologic findings suggested that the tumor developed from mucinous metaplasia of the coelomic mesothelium. Clinicopathological features, diagnostic findings, therapeutic options and the outcome are analyzed in this paper having reviewed the cases reported in world literature.- - - - - - - - - - ranking = 1.1666666666667keywords = cystadenoma (Clic here for more details about this article) |
6/19. Primary mucinous cystadenoma arising from behind the posterior peritoneum of the descending colon in a child: a case report.This is the first report of a primary mucinous cystadenoma (MCA) arising from behind the posterior peritoneum of the descending colon in a paediatric patient. A large intra-abdominal cystic lesion was found incidentally during renal ultrasonography in a 14-year-old girl. Imaging studies showed a 13 x 9 x 15 cm homogeneous cystic lesion with mild contrast enhancement of the wall. The cyst appeared to originate from the retroperitoneum, but was separated from the left kidney, ovary, and pancreas. At laparotomy, there was a cyst behind the posterior peritoneum of the descending colon. The cyst was successfully excised, and histopathology showed MCA. Although primary MCA in the retroperitoneum is extremely rare in children, it should be considered in the differential diagnosis of an intra-abdominal cyst, since it needs to be excised to eliminate the risk of infection, recurrence, and malignancy.- - - - - - - - - - ranking = 0.83333333333333keywords = cystadenoma (Clic here for more details about this article) |
7/19. Appendiceal cystadenoma mimicking a cystic renal mass.We report the first case of appendiceal mucinous cystadenoma associated with the kidney. A 57-year-old man with chronic renal failure presented with a right renal mass. During laparoscopic nephrectomy, frozen analysis of a tubular structure extending from the mass showed appendiceal tissue. The mass, appendix, and what was believed to be the right kidney were removed. Pathologic examination demonstrated mucinous cystadenoma of the appendix. No renal tissue was identified, but the patient refused further treatment. This case demonstrates that mucinous cystadenomas arising from retroperitoneal structures might mimic renal neoplasms and should be considered in the differential diagnosis of cystic renal masses.- - - - - - - - - - ranking = 1.1666666666667keywords = cystadenoma (Clic here for more details about this article) |
8/19. The first case of primary retroperitoneal mucinous cystadenoma in korea: a case report.Primary mucinous cystic cystadenomas of the retroperitoneum are very rarely encountered, and there have been only about 30 cases reported in the literature. The histogenesis of primary mucinous cystadenomas is unclear. Most authors suggested that it develops through mucinous metaplasia in a pre-existing mesothelium-lined cyst. Complete surgical excision is the only treatment and it is required for the final diagnosis and cure. We present here a case report of a 38-year-old Korean woman with primary retroperitoneal cystadenoma. It was a thin-walled, multilocular cyst with a dominant loculus that measured 10.0 x 7.5 x 5.5 cm3 in size, and to the best of our knowledge, this is the first such case to be reported in in korea.- - - - - - - - - - ranking = 1.1666666666667keywords = cystadenoma (Clic here for more details about this article) |
9/19. Primary retroperitoneal mucinous cystadenoma of borderline malignancy: a case report and review of the literature.A case of primary retroperitoneal mucinous cystic tumor of borderline malignancy is reported. A 36-year-old, nulliparous woman complained of abdominal fullness. physical examination revealed a cystic mass 12-cm x 8-cm in size. At laparotomy, a cystic tumor was observed in the right retroperitoneal space. Both ovaries appeared normal and the uterus was almost normal except for small myomatous nodules. Removal of the retroperitoneal tumor, an appendectomy, and a myomectomy were performed. The histologic diagnosis was a primary retroperitoneal mucinous cystic tumor of borderline malignancy, similar to findings for ovarian tumor. There was no evidence of disease 6 months after the surgery.- - - - - - - - - - ranking = 0.66666666666667keywords = cystadenoma (Clic here for more details about this article) |
10/19. Giant multilocular prostatic cystadenoma: a distinctive lesion of the retroperitoneum in men. A report of two cases.Two examples of large, multiloculated, cystic tumors that arose within the pelvis in men of 28 and 37 years of age are described. The tumors were composed of glands and cysts lined by prostatic-type epithelium lying in a hypocellular fibrous stroma. The prostatic nature of the lesions was confirmed by immunohistochemical staining of the epithelium for prostate-specific antigen and prostatic acid phosphatase. Two apparently similar lesions were found in the literature; one tumor was attached to the prostate by a pedicle, and the other arose in the retrovesical space. These tumors, for which we propose the designation "giant multilocular prostatic cystadenoma," appear to be benign, although they may recur if incompletely excised. They may pose considerable diagnostic difficulty if the prostatic nature of the epithelium is not appreciated, an error that is likely if a relationship to the prostate is not recognized. This lesion should be included in the differential diagnosis of retroperitoneal cystic tumors in men.- - - - - - - - - - ranking = 0.83333333333333keywords = cystadenoma (Clic here for more details about this article) |
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