[Pancreatic mucinous cystadenoma with atypical clinical presentation]. / Mutsinoznaya tsistadenoma podzheludochnoi zhelezy ­ netipichnyi variant techeniya zabolevaniya.

We present a 33-year-old patient with atypical clinical course of pancreatic mucinous cystadenoma. The tumor had connection with pancreatic ductal system and led to bleeding into cystic cavity. This contributed to incorrect preoperative diagnosis of post-necrotic cyst. The final diagnosis of mucinous cystadenoma was established after histological examination. Distal pancreatectomy excluded incorrect treatment.

A rare case of infection and spontaneous rupture in ovarian mucinous cystadenoma.

Ovarian cysts exhibit variable clinical presentations depending on their size, type and resulting sequelae. Rupture of ovarian cysts is infrequent, and cyst infections are even rarer. Here, we report an unusual case involving a young, non-pregnant woman who presented acutely with features of peritonitis and sepsis and was found to have a complex adnexal mass. Following a rigorous diagnostic evaluation, which included an urgent exploratory laparotomy and salpingo-oophorectomy, common diagnoses including tubo-ovarian abscess, endometriotic cyst and pelvic tuberculosis were ruled out. Instead, she was diagnosed with an ovarian mucinous cystadenoma that had become infected, possibly due to pelvic inflammatory disease, leading to spontaneous rupture. Such a presentation has rarely been reported, especially in a non-pregnant setting. Therefore, we emphasise the importance of considering this rare complication as a potential differential diagnosis in similar clinical presentations and discuss the management implications, including the importance of adequately treating pelvic inflammatory disease.

A case report of huge pancreas mucinous cystic neoplasm during pregnancy: How doctors think.

RATIONALE: Pancreas mucinous cystic neoplasm (PMCN) is uncommon, and its occurrence during pregnancy is rare. The management of PMCN during pregnancy, including diagnosis and surgical timing, is a great challenge. PATIENT CONCERNS: A nontender epigastric mass of the upper abdomen was detected by palpation in a 35-year-old woman, gravida 2, para 1, during the 36th week of gestation. She was referred to our institution for further evaluation. DIAGNOSES: Magnetic resonance imaging (MRI) showed a multilocular cystic mass in the body and tail of the pancreas (16.7/12.1/17.6 cm), well-circumscribed with a hyper signal on T2-weighted MRI images. The diagnosis of a pancreatic cyst, probable mucinous, was established. INTERVENTIONS: The patient was informed of the possibilities of malignancy, rapid growth, and rupture of the tumor. After a laparotomy and cesarean section, a large cystic tumor was discovered adherent to the pancreas, spleen, mesocolon, and retroperitoneum. The spleen was preserved since there was no evidence of invasion. According to macroscopic examinations, the tumor measured 18 cm was filled with a dark yellow-brownish mucinous fluid and did not appear to communicate with the pancreatic ducts. OUTCOMES: After six months of follow-up, there were no signs of recurrence in the patient. LESSONS: PMCN may need to be surgically resected in cases characterized by malignancy risk during pregnancy. As female sex hormones may influence the behavior of PMCN during pregnancy, surgical timing should be determined based on the stage of pregnancy, malignancy status, and condition of the mother and fetus.

[Pseudoascitis by giant ovaric cyst] / Pseudoascitis por quiste ovárico gigante.

The term pseudoascitis is used in patients who give the false impression of ascites, with abdominal distension but without peritoneal free fluid. The case of a 66-year-old woman, hypertensive and hypothyroid with occasional alcohol consumption, who consults due to progressive abdominal distension of 6 months of evolution and diffuse percussion dullness is presented, in whom a paracentesis is performed with the wrong endorsement of examination ultrasound that reports abundant intrabdominal free fluid (Fig. 1), later finding in the CT scan of the abdomen and pelvis an expansive process of cystic appearance of 295mm x 208mm x 250mm. Left anexectomy is programmed (Fig. 2) with pathological report of mucinous ovarian cystadenoma. The case report refers to the availability of the giant ovarian cyst within the differential diagnosis of ascites. If no symptoms or obvious signs of liver, kidney, heart or malignant disease are found and / or ultrasound does not reveal typical signs of intra-abdominal free fluid (fluid in the bottom of the Morrison or Douglas sac, presence of floating free intestinal handles), a CT scan and / or an RMI should be requested before performing paracentesis, which could have potentially serious consequences.

El término pseudoascitis, se utiliza en los pacientes que dan la falsa impresión de ascitis, con distensión abdominal pero sin líquido libre peritoneal. Se presenta el caso de una mujer de 66 años, hipertensa e hipotiroidea con consumo ocasional de alcohol, que consulta por distensión abdominal progresiva de 6 meses de evolución y matidez difusa a la percusión, en quien se realiza una paracentesis con el aval equivoco de examen ecográfico que informa abundante líquido libre  intrabdominal (Fig. 1), hallando posteriormente en TAC de abdomen y pelvis un proceso expansivo de aspecto quístico de 295mm x 208mm x 250mm. Se programa anexectomia izquierda (Fig. 2) con informe anatomopatológico de cistoadenoma mucinoso de ovario. La comunicación del caso remite a tener disponible el quiste ovárico gigante dentro de los diagnósticos diferenciales de ascitis. Si no se hallan síntomas o signos evidentes de insuficiencia hepática, renal, cardiaca o enfermedad maligna y/o la ecografía no revela signos típicos de líquido libre intrabdominal  (líquido en el fondo de saco de Morrison o de Douglas, presencia de asas intestinales libres flotantes), se debería solicitar una TAC y/o una RMI antes de realizar una paracentesis, la cual podría tener consecuencias potencialmente graves.

Mucinous Cystadenoma Arising in a Uterine Isthmocele: A Case Report.

Isthmocele is a discontinuation of the myometrium at the uterine scar site in a patient with a previous cesarian section (CS). The cause of isthmocele appears to be multifactorial. Poor surgical technique, low incision location, uterine retroflection, obesity, smoking, inadequate healing of scars, and maternal age are possible related factors. Most patients with this condition are asymptomatic. However, women can present with postmenstrual bleeding, pelvic pain, subfertility, dysmenorrhea, infertility, and scar abscess. Brazil has one of the world's highest cesarean section rates. One of the consequences of the rising rate of CS is the isthmocele, an emerging female health problem. Here we report a case of mucinous cystadenoma arising in a uterine isthmocele, a complication, as far as we could investigate, not yet described in the literature.

Istmocele é a descontinuidade do miométrio no local da cicatriz uterina em paciente com cesariana anterior. A causa da istmocele parece ser multifatorial. Má técnica cirúrgica, baixa localização da incisão, retroflexão uterina, obesidade, tabagismo, cicatrização inadequada de cicatrizes e idade materna são possíveis fatores relacionados. A maioria dos pacientes com esta condição é assintomática. No entanto, as mulheres podem apresentar sangramento pós-menstrual, dor pélvica, subfertilidade, dismenorreia, infertilidade e abscesso cicatricial. O Brasil tem uma das maiores taxas de cesariana do mundo. Uma das consequências da taxa crescente de cesarianas é a istmocele, um problema emergente de saúde feminina. Aqui relatamos um caso de cistoadenoma mucinoso originado em uma istmocele uterina, uma complicação ainda não descrita, até onde pudemos investigar.

Primary retroperitoneal mucinous cystic neoplasm of borderline malignancy with KRAS and GNAS co-mutation: a case report.

Primary retroperitoneal mucinous cystic neoplasms are rare retroperitoneal tumors, which are histologically similar to mucinous cystic neoplasms of the ovaries. Only 31 cases of primary retroperitoneal mucinous cystic neoplasm with borderline malignancy (PRMCN-BM) have been reported (26 in women and five in men). We describe an additional male patient with PRMCN-BM. A 39-year-old man presented to our hospital with back pain. Twelve years earlier, he had undergone an orchiectomy for a germ cell tumor. Computed tomography showed a 6.9- × 4.4-cm cystic mass in the left pararenal space. Laparoscopic mass excision was performed, and a unilocular cystic mass was found in the pararenal space near the lower pole of the left kidney. A histopathological examination showed a cyst lined by atypical mucinous intestinal epithelium without stromal invasion. Targeted next-generation sequencing identified two hotspot mutations, with one each in the KRAS and GNAS genes. Outpatient follow-up 10 months after surgery showed no evidence of tumor recurrence. PRMCNs are extremely rare retroperitoneal neoplasms, especially in men. These neoplasms are rarely considered in the differential diagnosis of retroperitoneal masses, and their preoperative diagnosis is difficult. Evaluation of additional patients is required to better determine the prognosis of PRMCNs and the optimal postoperative follow-up.

CYSTIC PANCREATIC LESIONS: IMAGING VERSUS ANATOMOPATHOLOGICAL FINDINGS-HOW TO IMPROVE DIAGNOSTIC ACCURACY?

BACKGROUND: Pancreatic cystic lesions are a group of pancreatic neoplasms with different behavior and risk of malignancy. Imaging diagnosis and differentiation of these lesions remain a challenge. AIMS: The aim of this study was to evaluate the agreement between computed tomography and/or magnetic resonance imaging and post-operative pathologic diagnoses of Pancreatic cystic lesions in a University Hospital of São Paulo State. METHODS: A total of 39 patients with surgically diagnosed Pancreatic cystic lesions were enrolled, as a study cohort from 2009 to 2019. Preoperative radiological and final pathological diagnosis was correlated to measure computed tomography and/or magnetic resonance imaging diagnostic. Pancreatic adenocarcinoma, choledochal pancreatic cyst, mucinous cystadenoma, serous cystadenoma, intraductal papillary mucinous neoplasms, and pancreatic pseudocyst were classified as neoplastic cysts. RESULTS: It was noted that 27 patients (69.23%) had preoperative computed tomography and magnetic resonance imaging, 11 patients (28.20%) had preoperative computed tomography only, and 1 patient had preoperative magnetic resonance imaging only. The values for diagnoses made only with computed tomography (p=0.47) and from the combination of computed tomography+magnetic resonance imaging (p=0.50) did also point to moderate agreement with the anatomopathological findings. The values pointed to a fair agreement for the diagnosis of mucinous cystadenoma (p=0.3), moderate agreement for intraductal papillary mucinous neoplasms (p= 0.41), good agreement for serous cystadenoma (p=0.79), and excellent agreement for choledochal pancreatic cyst (p=1), pancreatic pseudocyst (p=0.84), and Frantz tumor (p=1) (p<0.05). CONCLUSIONS: The findings of computed tomography and/or magnetic resonance imaging have an equivalent diagnostic agreement with an anatomopathological diagnosis for differentiating benign from malignant Pancreatic cystic lesions and in suggesting a specific diagnosis. There is no statistical difference between the use of computed tomography alone and computed tomography+magnetic resonance imaging in the improvement of diagnostic accuracy.

Rare association of epidermoid cyst of ovary with mucinous cystadenoma- A Case Report.

Epidermoid cyst is a rare benign neoplasm of the ovary, lined by stratified squamous epithelium, lacking skin, adnexal structures, and other teratomatous elements. On the other hand, mucinous cystadenoma is one of the most common benign ovarian neoplasm that microscopically shows cystic areas lined by tall columnar mucinous epithelium. Although its coexistence with other tumours, such as mature cystic teratoma, squamous cell carcinoma, clear cell adenocarcinoma, Brenner's tumour, serous cystadenoma, etc., have been reported, a combination of benign epidermoid cyst and mucinous cystadenoma has rarely been documented in literature. We report a case of coexistence of epidermoid cyst and mucinous cystadenoma in an ovarian cyst.

Postmenopausal woman with 24 kilograms ovarian mucinous cystadenoma: a rare case report.

A case of a 53-year-old postmenopausal woman presenting a giant ovarian cystic mucinous tumor weighing 24 kg is reported here. When she was seen first at our outpatient clinic, she had gross abdominal distension since 2 years, and she complained of unbearable aggressive pain. Her computed tomography (CT) scan was done which came suggestive of ovarian serous cystadenoma of large massive size 35 x 40 x 32 cm with moderate ascites. On exploratory laparotomy, a giant, totally cystic, vascularized and smooth mass attached to the right ovary was encountered. On the postoperative tenth day, she was discharged without any problem. Histopathology report of the right ovarian cystic mass came suggestive of multiloculated cyst with capsule intact with Borderline Mucinous tumor of right ovary weighing 24 kg. This is both one of the largest known examples in the literature and the largest ovarian cyst ever seen at our institution.

Brenner Tumor of the Ovary: A 10-Year Single Institution Experience and Comprehensive Review of the Literature.

Brenner tumors (BTs) are surface-epithelial stromal cell tumors that are categorized by the World Health Organization as benign, borderline, and malignant. Due to the rarity of BTs, the published literature on these tumors is comprised primarily of case reports and small retrospective studies. We performed a pathology database review spanning the last ten years at our institution revealing nine reported benign BTs. We collected the clinical and pathological data of patients associated with those BTs, describing the clinical presentation and imaging results, and assessing the possible risk factors associated with them. The average age at diagnosis was 58 years. BTs were discovered incidentally in 7/9 cases. The tumor was multifocal and bilateral in 1/9 cases and ranged in size from 0.2 cm to 7.5 cm. Associated Walthard rests were found in 6/9 cases and transitional metaplasia of surface ovarian and/or tubal epithelium was found in 4/9 cases. One patient had an associated mucinous cystadenoma in the ipsilateral ovary. Another patient had an associated mucinous cystadenoma in the contralateral ovary. In conclusion, we found that Walthard rests and transitional metaplasia are common findings in association with BTs. Additionally, pathologists and surgeons need to be aware of the association between mucinous cystadenomas and BTs.

[A case of large Mucinous Cystadenoma of the Ovary at the Regional Teaching Hospital of Ouahigouya (Burkina Faso)]. / Un cas de volumineux Cystadénome Mucineux de l'ovaire au Centre Hospitalier Universitaire Régional De Ouahigouya (Burkina Faso).

Introduction: A benign tumor of middle-aged women, mucinous cystadenoma accounts for about 20% of tumors of the ovary. It can reach very large sizes. Clinical observation: We report the case of a 42-year-old patient received for a voluminous abdomino-pelvic mass. The examination found a soft, rounded, fairly mobile abdomino-pelvic mass going up to the level of the xiphoid appendix with a light skin and collateral venous circulation. Imaging showed a circumscribed fluid formation occupying the abdomino-pelvic cavity of 40.1 x 29 x 25.7 cm developed at the expense of the ovary. A laparotomy brought to light a voluminous cyst at the expense of the left ovary with fluid content cowardly adhering to the abdominal wall and intimately to the left proboscis. The uterus and right adnexa were unremarkable. We performed a left adnexectomy with satisfactory hemostasis taking away the cyst. The adnexectomy piece weighed 13.5 kg. The surgical follow-ups were simple. Anatomo-pathological examination confirmed a mucinous cystadenoma of the ovary. Conclusion: Mucinous cystadenoma of the ovary is a benign tumor which can reach very large volumes. Its treatment is surgical and the follow-ups are usually simple.

Endocrine cell micronests in an ovarian mucinous borderline tumor: a potential diagnostic pitfall for microinvasion.

The occurrence of endocrine cell micronests in ovarian tumors is rarely reported. To our knowledge, there are only three prior cases reported to date: one occurring in an ovarian mucinous cystadenoma, one in an ovarian mucinous cystadenofibroma, and another in an ovarian mucinous carcinoma with a predominant borderline component. This is a 27-year-old woman that presented with a one-month history of abdominal pain and fullness. Imaging studies revealed a large multiloculated cystic and solid mass measuring 23 cm occupying the majority of the pelvis and abdomen concerning for a primary ovarian malignancy. The patient underwent a right salpingo-oophorectomy with appendectomy. Histologic sections from the ovary showed a multiloculated, cystic and focally solid mass lined by gastrointestinal-type mucinous epithelium with variable degrees of proliferation accounting for greater than 10% of the tumor. In addition to the mucinous epithelial component, there were several foci of bland, monotonous epithelioid cells arranged in solid nests with focal tubular/acinar formation within the fibrous septa and mucinous epithelium. Immunohistochemical studies showed that these cells were positive for cytokeratin, EMA, and synaptophysin, while negative for inhibin. The Ki-67 proliferation index was low (<1%). The presence of endocrine cell nests associated with an ovarian mucinous neoplasm is a rare phenomenon. Whether this represents preservation of endocrine cells in the context of epithelial degeneration or an independent neoplastic component is unclear. Progression related to this endocrine cell proliferation is unlikely and the recognition of this phenomenon holds more diagnostic value than prognostic significance, as it could be confused with microinvasion or sex cord stromal elements.

Intestinal-type mucinous ovarian carcinoma arising from a seromucinous precursor lesion.

OBJECTIVE: Mucinous ovarian carcinoma is a tumor with gastrointestinal differentiation, which is not associated with endometrial-type (endometriotic or seromucinous) precursors. Here, we describe a peculiar case of mucinous ovarian tumor with intestinal differentiation arising in a seromucinous lesion, which may represent a distinct entity. CASE PRESENTATION: A 58-year woman underwent surgery due to a 14.5-cm ovarian mass with lymph nodal, peritoneal, omental and colorectal involvement. Histological examination with ancillary immunohistochemical analysis has been performed. Histologically, the mass was a carcinoma with intestinal differentiation and expansile growth pattern, arising in a seromucinous cystadenoma with intestinal metaplasia. Both the carcinoma and the metaplasia showed loss of Müllerian markers (estrogen and progesterone receptors, PAX8) and positivity for intestinal-type markers (cytokeratin 20, CDX2). CONCLUSIONS: Our case may represent the ovarian counterpart of endometrial gastrointestinal-type carcinoma, which is an aggressive entity developing from gastrointestinal metaplasia of the endometrial epithelium. Acknowledging the existence of such entity might be relevant in terms of diagnosis and patient management.

Two-Port Laparoscopic Removal of Large Ovarian Cystadenoma.

An ovarian mucinous cystadenoma is a common benign tumour of the ovary that tends to reach very large sizes. Although traditional morcellation in the abdominal cavity is largely avoided in gynaecologic surgery, several authors have proposed other systems and techniques for the removal of large masses without resorting to laparotomy. We proposed an extremely minimally invasive technique to remove a large mass with a very low suspicion of malignancy, and created a video demonstration of the procedure. In this short film we illustrate our novel technique using only 2 laparoscopic ports, which maximizes both cosmesis and speed of recovery. The technique is not a completely closed system, therefore the potential for spreading an undiagnosed malignancy still exists. Accordingly, the authors do not suggest this technique for masses with a high potential for malignancy. However, in properly consented patients where there is very little suspicion for malignancy, our technique may be a reasonable option to promote fast recovery and provide excellent cosmesis.

Diagnostic Concordance and Preoperative Risk Factors for Malignancy in Pancreatic Mucinous Cystic Neoplasms.

Background/Aims: As pancreatic mucinous cystic neoplasms (MCNs) are considered premalignant lesions, the current guidelines recommend their surgical resection. We aimed to investigate the concordance between preoperative and postoperative diagnoses and evaluate preoperative clinical parameters that could predict the malignant potential of MCNs. Methods: Patients who underwent surgical resection at Samsung Medical Center for pancreatic cystic lesions and whose pathology was confirmed to be MCN, between July 2000 and December 2017, were retrospectively analyzed. Results: Among a total of 132 patients 99 (75%) were diagnosed with MCN preoperatively. The most discordant preoperative diagnosis was an indeterminate pancreatic cyst. The proportion of male patients was higher (24.2% vs 7.1%, p=0.05) in the diagnosis-discordance group and the presence of worrisome features in radiologic imaging studies, such as wall thickening/enhancement (12.1% vs 37.4%, p=0.02) or solid component/mural nodule (3.0% vs 27.3%, p=0.02), was lower in the diagnosis-discordance group. The presence of symptoms (57.7% vs 34.9%, p=0.02), tumor size greater than 4 cm (80.8% vs 55.7%, p=0.04), and radiologic presence of a solid component/mural nodule (42.3% vs 16.0%, p=0.01) or duct dilatation (19.2% vs 6.6%, p=0.01) were significantly associated with malignant MCNs. Conclusions: In our study, the overall diagnostic concordance rate was confirmed to be 75%, and our findings suggest that MCNs have a low malignancy potential when they are less than 4 cm in size, are asymptomatic and lack worrisome features on preoperative images.

Recurrent mucinous neoplasm arising in cesarean scar: A case report and review of literature.

Ovarian mucinous tumors are one of the common epithelial tumors in the ovary, but their recurrence is extremely rare. In a 37-year-old female patient who had had five operations in 7 years due to recurrent mucinous neoplasms, a mass extending to the umbilicus was recently detected during a routine examination. With this finding the patient underwent cystectomy, total abdominal hysterectomy, and left salpingo-oophorectomy. Two of the five operations were performed during cesarean delivery. In the recent surgical procedure, two cysts were removed. A 20 cm cyst in the pelvic region was diagnosed as a mucinous cystadenoma. The other cyst located in the myometrium was a mucinous cystadenoma with focal borderline change and arose in the previous cesarean scar. The authors present what is believed to be the first case of recurrent mucinous neoplasm arising within a cesarean scar. A review of the literature concerning the topic is also presented.

Mucinous Cystadenoma of Ovary with Vague Symptoms: A Case Report.

Ovarian cyst is a fluid-filled sac in the ovary, common among reproductive women. Mucinous cystadenoma is a common variety of non-functional benign lesions that presents vague symptoms and can mislead the diagnosis. A 26-year-old female presented to the clinic with weakness and lethargy, which lasted for 3 months, along with other symptoms like headache, abdominal pain, bloating, nausea, and constipation. She was managed with iron deficiency anaemia, however, her symptoms did not improve. Later, an ultrasound revealed an ovarian cyst. Laparoscopic left-sided ovarian cystectomy was performed and a biopsy was sent for histopathological examination. The case highlights the various nonspecific symptoms in a case of an ovarian cyst. Gynaecological causes for systemic symptoms should always be considered, along with proper gynaecological history and examination. This helps with the accuracy of diagnosis and treatment options, with minimal costs. Keywords: case report; ovarian cysts; symptoms.

Cistoadenoma volumoso associado a teratoma ovariano maduro, com evolução para pseudomixoma peritoneal: relato de caso / Giant cystadenoma associated with mature ovarian teratoma with progression to pseudomyxoma peritonei: a case report

Massas anexiais representam grande desafio diagnóstico, devido a seu caráter geralmente assintomático¹. Traz-se caso peculiar de paciente que evoluiu com sintomas exuberantes de rápida evolução, situação característica de cistoadenomas, tumores benignos de origem epitelial²,³. Realizada laparotomia, com achados macroscópicos que revelaram conteúdo mucinoso e presença de pelos e neovascularização em seu interior. O anatomopatológico confirmou o diagnóstico de cistoadenoma associado a teratoma ovariano, sendo assim considerado um tumor de colisão ovariana.

Adnexal masses represent a major diagnostic challenge due to its usually asymptomatic characteritcs¹. We present a peculiar case of a patient who evolved with exuberant symptoms of rapid evolution, characteristic of cystadenomas, benign tumors of epithelial origin²,³. Laparotomy was performed, with macroscopic findings that revealed mucinous content and the presence of hairs and neovascularization inside. Pathology confirmed the diagnosis of cystadenoma associated with ovarian teratoma, thus being considered an ovarian collision tumor.

[Pancreatic mucinous cystadenoma complicated by intestinal bleeding]. / Mutsinoznaya tsistadenoma podzheludochnoi zhelezy, oslozhnennaya kishechnym krovotecheniem.

Mucinous cystadenoma is a cystic tumor of the pancreas absolutely requiring surgical intervention. The authors report successful surgical treatment of a patient with mucinous pancreatic cystadenoma complicated by severe intestinal bleeding.