Mucinous cystadenoma presenting as appendiceal mucocele
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International Journal of Case Reports and Images (IJCRI)International Journal of Case Reports and Images (IJCRI) is an international, peer reviewed, monthly, open access, online journal, publishing high-quality, articles in all areas of basic medical sciences and clinical specialties.Aim of IJCRI is to encourage the publication of new information by providing a platform for reporting of unique, unusual and rare cases which enhance understanding of disease process, its diagnosis, management and clinico-pathologic correlations.Keywords:
Mucinous cystadenoma
Mucocele
Electronic journal
Cystadenoma
Pseudomyxoma Peritonei
Mucinous Tumor
Though collision tumors have been reported earlier like serous cystadenoma and mature cystic teratoma, combination of mucinous cystadenoma and adult granulosa cell tumor is rarely reported in the literature. Collision tumors lack the histological cellular intermingling which is seen in composite tumors. Both involve two morphologically and immunohistochemically distinct neoplasms coexisting within a single organ. Mucinous cystadenoma is a benign cystic surface epithelial tumor of ovary. Granulosa cell tumor(GCT) is a low grade malignancy arising from sex cord stromal cells of ovary and need a close follow up for recurrences which may be late. Here we present a case of 50 year old female who presented with lower abdominal pain. Patient underwent staging laporotomy and ovarian specimen sent for histopathological examination, where it was diagnosed as mucinous cystadenoma coexisting with adult granulosa cell tumor. This case report emphasis upon the fact that multiloculated cyst have to be extensively examined grossly, so as not to miss any solid component which might have a bearing on prognosis of the patient. Here the association of mucinous cystadenoma and granulosa cell tumor need close follow up of patient.
Mucinous cystadenoma
Serous Cystadenoma
Mucinous Tumor
Granulosa cell
Cystadenoma
Ovarian tumor
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Mucinous cystadenoma is a generic denomination usually applied to cystic formations filled with mucinous content and showing signs of epithelial proliferation. They usually arise in ovaries, pancreas and appendix, but there have been occasional reports in many other locations. Most retroperitoneal and mesenteric mucinous cystadenomas have affected women, and a potential müllerian origin has been postulated, although for most of them their histogenesis remains uncertain. Some cases have shown malignant behavior. We herein describe a case of mucinous cystadenoma affecting a young man with an unusual prerectal location. An exhaustive study was performed as a basis for the discussion of possible origins for this tumor. This lesion showed premalignant proliferative changes, suggesting an early stage in a potential malignant transformation. DOI: 10.21276/APALM.1453
Mucinous cystadenoma
Histogenesis
Cystadenoma
Mucinous Tumor
Malignant Transformation
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We experienced a case of early recurrence of pancreatic mucinous cystadenoma due to incomplete resection of the adjacent normal tissues of the lesion, which was classified into megacystic type and was successfully re-resected. The patient was a 47-year-old woman. In May, 1992, she was operated on for a giant cystic tumor of the pancreatic tail at another hospital. The resected specimen was 31×26×15cm in size. The microscopical diagnosis of the tumor was mucinous cystadenoma. Abdominal CT scan 3 months after the surgery revealed a cystic tumor in the pancreatic body and tail. The cystic tumor was growing to multiloculated cysts with the size of 7×9cm 1 year after the surgery. The patient was admitted to the hospital. The tumor was diagnosed as recurrent cystadenoma with malignancy. Resection of the pancreatic tail and body with splenectomy, partial colectomy and lymphnode dissection was carried out in May, 1994. The resected tumor was multiloculated cyst with clear mucinous fluid, and 10×8×6cm in size. The microscopical diagnosis of the tumor was mucinous cystadenoma without malignancy. The patient is well now free from the tumor recurrence 1 year 8 months after the surgery.
Mucinous cystadenoma
Mucinous Tumor
Cystadenoma
Pancreatic tumor
Cystadenocarcinoma
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Primary retroperitoneal mucinous cystadenoma is a rare tumor only 48 cases have been reported in international literature. Patients affected by primary retroperitoneal mucinous cystadenoma/cystadenocarcinoma ranged in age from 17 to 86 years (median, 42.3 years) and the size of the cystis ranged from 5 to 35 cm (median, 16.1 cm). There is no unanimous opinion on the genesis of these tumors and, due to their extreme rarity, its histogenesis, biological behavior and the optimal management strategy remain at a speculative level.We report the case of a huge borderline primary retroperitoneal mucinous cystadenoma (24 x 25 cm) in a 35-year-old woman and the strategies adopted for the diagnosis and surgical management.Primary mucinous cystic tumor of the retroperitoneum was correctly diagnosed only at the time of surgery. As well as in the majority of cases reported in the literature, preoperative investigations were not able to give information about the tumor site. In spite of the short follow-up (two years), the patient's favorable course supports the hypothesis that primary retroperitoneal mucinous cystadenoma may be treated in the same manner as a primary ovarian tumor of the same grade and comparable stage.
Mucinous cystadenoma
Mucinous cystadenocarcinoma
Cystadenoma
Mucinous Tumor
Cystadenocarcinoma
Retroperitoneal space
Histogenesis
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Primary retroperitoneal mucinous cystadenoma is a rare neoplasm, with benign biological behavior. Delay in diagnosis and treatment of this tumor may be fatal for the patient, because of complications, such as rupture, infection and malignant transformation.We present a 23-year-old woman, who was admitted to the hospital because of a palpable abdominal mass and discomfort since 4 months. Computed Tomography and Magnetic Resonance Imaging scans were performed and showed two retroperitoneal cystic masses, which were excised by laparoscopy. Histological and immunohistochemical examination revealed that the inner surfaces of the cysts were lined by epithelium with features of mesothelial cells, in addition to ovarian mucinous cystadenoma. This is the 29(th) case and the second reported case with two contemporary cysts.The origin of retroperitoneal mucinous cystadenomas is still unclear. Pathological and immunohistochemical findings proved that these tumors resemble ovarian mucinous cystadenomas but are unattached to the ovary and can arise at any location in the retroperitoneum. Surgical excision of the aforementioned tumors is the treatment of choice. Hippokratia 2014; 18 (3): 278-281.
Mucinous cystadenoma
Cystadenoma
Mucinous Tumor
Serous Cystadenoma
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Twenty-two cases in which mucinous tumors of the appendix were associated with mucinous tumors of the ovary are reported. The patients ranged from 23 to 83 (average 49) years of age and usually presented with increasing abdominal girth. The appendiceal and ovarian tumors were synchronous in 21 cases. Laparotomy typically disclosed large cystic ovarian tumors that averaged 16 cm in diameter and were usually multiocular, an appendix that was usually dilated and covered with mucus, and abundant intra-abdominal mucus. The ovarian tumors were bilateral in seven cases. The ovarian and appendiceal tumors were typically similar histologically, with features similar to those of ovarian mucinous cystadenomas and cystadenomas of borderline malignancy. In most of the ovarian tumors, mucin dissected through the ovarian stroma (so-called pseudomyxoma ovarii). Eight of the 20 patients with follow-up information were well when last seen, but the duration of follow-up was 3 years or less in six of them. Two patients died of pseudomyxoma peritonei 4 and 5.5 years after presentation. One patient died of a myocardial infarct shortly after laparotomy for recurrent pseudomyxoma peritonei at 11 years. The remaining patients had definite or probable recurrent or residual disease but were alive at the time of the last follow-up information. The typical synchronous presentation of the ovarian and appendiceal tumors, their histologic similarity, the frequency of bilaterality of the ovarian tumors, the predominance of right-sided ovarian involvement, and the usual presence of mucin and atypical mucinous cells on the ovarian surfaces all point toward the probable secondary nature of the ovarian tumors.
Pseudomyxoma Peritonei
Mucinous cystadenoma
Mucinous Tumor
Mucinous carcinoma
Ovarian tumor
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Mucinous cystadenoma is the most common of benign neoplasms of the appendix and carcinoid is the most common type of primary malignant lesions of the appendix.We report a rare case of a 57-year-old female with combined mucinous cystadenoma and carcinoid tumor of the appendix.Dual carcinoid and epithelial neoplasia is a rare occurrence in the appendix.A 57-year-old Caucasian woman presented after incidentally palpating a mass on her right iliac fossa. Imaging modalities revealed a cystic tumor in the right iliac fossa with a diameter of about 8 cm, originating either from the right ovary or the appendix. She underwent laparoscopic surgical exploration, which revealed appendiceal mucocele and appendicectomy was finally performed as well as excision of a right ovarian cyst. Pathological examination showed acollision tumor consisting of mucinous cystadenoma and carcinoid tumor of the appendix. Because of the size and extension of the carcinoid tumor, which the pathology report revealed, she underwent re-exploration and laparoscopic right colectomy.Mucinous cystadenoma is rare, but it is the commonest of benign appendiceal tumours accounting for 0.6% of appendectomy specimens. It can present as appendicitis,mucocele or if the tumour ruptures, as pseudomyxomaperitonei. On the other hand, carcinoid is the most common type of primary malignant lesion of the appendix and 0.3-0.9%of appendectomy specimens, with small predominance in female patients. Rare cases of mucinous cystadenomas of the appendix coexisting with carcinoid tumors were reported before, but in our case it was a collision tumor with no transitional zone between them. Also, the clinical presentation of our patient and the differential diagnosis of ovarian lesions from appendiceal tumors is worth being mentioned.
Mucinous cystadenoma
Mucinous Tumor
Mucocele
Cystadenoma
Iliac fossa
Mucinous cystadenocarcinoma
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Mucinous cystadenoma commonly occurs in the grandular system, including the appendix, ovary, kidney, and pancreas. It is considered a benign tumor. In the head and neck region, it is rare but sometimes occurs in the parotid glands and the minor salivary glands. We report a case of mucinous cystadenoma occurring in the retromolar region. A 73-year-old woman was referred to our hospital in August 2005 because of a mass in the retromolar region. Intraoral examination revealed an enlarged mass measuring about 20 × 15 mm and covered with normal mucosa in the retromolar region. A benign tumor was suspected clinically. The mass was resected under general anesthesia. Histopathologically, it was diagnosed as a mucinous cystadenoma. There was no evidence of recurrence 60 months after operation.
Mucinous cystadenoma
Cystadenoma
Mucinous Tumor
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Pseudomyxoma Peritonei
Mucocele
Mucinous cystadenoma
Mucinous cystadenocarcinoma
Mucinous Tumor
Cystadenocarcinoma
Cystadenoma
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Citations (34)