Cistoadenoma mucinoso apendicular / Appendiceal mucinous cystadenoma

El cistoadenoma apendicular es una neoplasia poco frecuente, que tiene una incidencia de 0,2 % a 0,3 % en todas las apendicetomías; esta afección predomina en pacientes féminas y su presentación es poco específica en cuanto a los síntomas, los cuales pueden compararse a un cuadro de apendicitis aguda, una masa abdominal, un cuadro obstructivo o ginecológico, o manifestaciones urológicas, que son las menos frecuentes. Se presentó una paciente femenina de 59 años de edad con dolor abdominal localizado en la fosa ilíaca derecha de 4 meses de evolución; se realizaron varios exámenes complementarios, una laparoscopia diagnóstica, una laparotomía exploratoria y también una apendicetomía. Después de estos exámenes se realizó un diagnóstico histológico de cistoadenoma mucinoso apendicular.

Appendiceal cystadenoma is a rare neoplasm, with an incidence of 0.2% to 0.3% among all appendectomies; this condition predominates in female patients and its presentation is unspecific in terms of symptoms, which can be compared to acute appendicitis, an abdominal mass, obstructive or gynecological symptoms, or urological manifestations, which are the least frequent. We present a 59-year-old female patient with an abdominal pain over 4 months located in the right iliac fossa; several complementary tests were performed such as a diagnostic laparoscopy, an exploratory laparotomy and an appendectomy. After these examinations, a histological diagnosis of appendiceal mucinous cystadenoma was made.

Mucocele of the appendix: what to expect / Mucocele do apêndice: o que esperar

Abstract Mucoceles of the appendix are rare and can have quite variable imaging and clinical presentations, sometimes mimicking an adnexal mass. The underlying cause can be neoplastic or non-neoplastic. The typical imaging appearance of a mucocele of the appendix is that of a cystic structure with a tubular morphology. This structure is defined by having a blind-ending and being contiguous with the cecum. Radiologists should be familiar with key anatomical landmarks and with the various imaging features of mucoceles of the appendix, in order to provide a meaningful differential diagnosis of a lesion in the right lower abdominal quadrant. In addition, a neoplastic mucocele can rupture, resulting in pseudomyxoma peritonei, which will change the prognosis dramatically. Therefore, prompt diagnostic imaging is crucial.

Resumo Mucoceles do apêndice são raras e podem ter uma apresentação clínica e imagiológica bastante variável, por vezes mimetizando patologia anexial. As causas subjacentes podem ser neoplásicas ou não neoplásicas. O aspecto de imagem típico de mucoceles do apêndice é o de uma estrutura de natureza cística com morfologia tubular. Esta estrutura deverá terminar "em fundo cego" e ser contígua com o ceco. Os radiologistas devem estar familiarizados com os pontos anatômicos de referência e com as diferentes características imagiológicas de mucoceles do apêndice, de modo a fornecer um adequado diagnóstico diferencial de uma lesão localizada no quadrante abdominal inferior direito. Para além disso, uma mucocele neoplásica pode sofrer ruptura, resultando em pseudomixoma peritoneal, o que altera drasticamente o prognóstico. Assim, o diagnóstico por imagem em tempo útil é crucial.

Cistoadenoma mucinoso fronterizo gigante del ovario en una paciente posmenopáusica / Giant ovarian mucinous borderline cystoadenoma, in a posmenopausic patient

RESUMEN Introducción: Los tumores del ovario no son tan frecuentes como los del útero y los de la mama. Constituyen el tercer grupo de tumores benignos y malignos de la mujer. El cistoadenoma fronterizo tiene características clinicopatológicas intermedias entre las de los tumores benignos y malignos. Objetivo: Describir el manejo terapéutico exitoso de un caso de una mujer posmenopáusica con cistoadenoma mucinoso fronterizo de ovario. Caso clínico: Paciente hipertensa y diabética, operada en el Hospital Clínico Quirúrgico Lucía Íñiguez Landín de la provincia Holguín, posmenopáusica de 54 años, con tumor gigante de ovario izquierdo y evolución clínico-quirúrgica satisfactoria. Conclusiones: El cistoadenoma mucinoso fronterizo suele estar limitado al ovario en el momento del diagnóstico, sin invasión capsular ni peritoneal. El riesgo de degeneración maligna es muy variable y está relacionado con la edad. Para su tratamiento se recomienda la ooforectomía, omentectomía y biopsia del ovario contralateral, de ganglios retroperitoneales, nódulos peritoneales visibles y la citología del líquido peritoneal.

ABSTRACT Introduction: Ovarian tumors are not as frequent as those of the uterus and breast. They constitute the third group of benign and malignant tumors in women. Border cystadenoma has clinicopathologic intermediate features between those of benign and malignant tumors. Objective: To describe the successful therapeutic management of a case of a postmenopausal woman with borderline mucus cystadenoma of ovary. Case report: A hypertensive and diabetic patient, operated in the Lucia Iñiguez Landín Clinical Surgical Hospital in Holguin province, 54-year-old postmenopausal, with a giant tumor of the left ovary and satisfactory clinical-surgical evolution. Conclusions: Border mucinous cystadenoma is usually limited to the ovary at the time of diagnosis, without capsular or peritoneal invasion. The risk of malignant degeneration is highly variable and is related to age. For its treatment, oophorectomy, omentectomy and biopsy of the contralateral ovary, retroperitoneal nodes, visible peritoneal nodules and cytology of peritoneal fluid are recommended.

A rare combination of Dermoid cyst and Cystadenoma: Are collision tumors in the ovary a real entity?

Collision tumors have been reported in various organs like the gastrointestinal tract, lung, skin, adrenals, central nervous system, lymph nodes, uterus, but are rarely seen in the ovary. Collision tumors are two histologically distinct neoplasms in the same organ without any intermixture between them. Here we present a case of a collision tumor of the ovary represented by a mucinous cystadenoma and teratoma. It is imperative for a surgical pathologist to correctly diagnose the collision tumor components and differentiate them from mixed tumors as it will dictate the appropriate treatment based on the individual biological aggressiveness of each component.

Cistoadenoma mucinoso de la válvula ileocecal: tumoración intestinal infrecuente en un niño de 1 año. Reporte de caso / Mucinous cystadenoma of the ileocecal valve. Uncommon intestinal tumor in a oneyear-old boy. Case report

RESUMEN El cistoadenoma mucinoso se encuentra usualmente en el ovario, páncreas y el apéndice, pero su presentación en el intestino es extremadamente rara. En este reporte de caso, presentamos a un niño con obstrucción parcial intestinal debido a un cistoadenoma mucinoso en la válvula ileocecal. En la cirugía se retiró el íleo terminal, válvula ileocecal, ciego y apéndice, seguido de anastomosis ileocecal. El paciente evolucionó favorablemente en el postoperatorio y se recuperó sin contratiempos. A nuestro entender, este es el primer reporte de presentación de este tumor en dicha localización.

ABSTRACT Mucinous cystadenoma is usually found in the ovary, pancreas and appendix but its presentation in the intestine is extremely rare. In this case report we present an infant with partial intestinal occlusion due to a mucinous cystadenoma of the ileocecal valve. We performed an excision of the terminal ileum, ileocecal valve, cecum and appendix, followed by ileocolic anastomosis. The patient did well after the procedure and recovered uneventfully. To our knowledge, this is the first case report of this tumor in this location.

Cistoadenoma mucinoso del apéndice: un caso con presentación inusual / Appendiceal mucinous cystoadenom: inusual presentation case

RESUMEN Fundamento: los tumores mucinosos representan alrededor del 8 % de las neoplasias apendiculares y originan dilatación quística del apéndice debido a la acumulación de material gelatinoso. El cistoadenoma mucinoso del apéndice es una rara enfermedad, que cursa de manera asintomática y se diagnostica de manera incidental mediante estudios imagenológicos o intra operatorio y representa de un 0,2 % a 0,6 % de las apendicectomías. Objetivo: presentar el caso inusual de una joven operada por apendicitis aguda que tenía además un cistoadenoma mucinoso del apéndice. Caso clínico: paciente nuligesta, de 19 años de edad con antecedentes de pérdida de peso en un período de seis meses y cuadros recurrentes de dolor en epigastrio que aliviaban con analgésicos, acudió por dolor en el cuadrante inferior derecho del abdomen de 48 horas de evolución, acompañado de náuseas y pérdida del apetito. Al examen físico se constató taquicardia y dolor abdominal a la palpación en la fosa iliaca derecha, con maniobra de Blumberg positiva, el tacto vaginal y rectal resultaron dolorosos. En el acto quirúrgico se constató apéndice cecal engrosado en el tercio proximal, turgente, con una tumoración dura en tercio distal y se realizó apendicectomía sin complicaciones. La evolución fue favorable y fue dada de alta. Conclusiones: a pesar de lo raro de esta afección, el cirujano debe conocer que en un cuadro apendicular puede estar presente este tipo de tumor aún en pacientes jóvenes a fin de tomar la conducta quirúrgica adecuada y evitar complicaciones al enfermo.

ABSTRACT Background: mucinous tumors represent about 8% of appendix neoplasms and cause cystic dilatation of the appendix due to the accumulation of gelatinous material. Mucinous cystadenoma of the appendix is a rare disease, which occurs asymptomatically and is diagnosed incidentally through imaging studies or intra-operatively and accounts for 0.2% to 0.6% of appendectomies. Objective: to present the unusual case of a 19-year-old girl operated on for acute appendicitis who also had a mucinous cystadenoma of the appendix. Clinical case: patient without previous pregnancy, with a history of weight loss in a period of 6 months and recurrent pain in the epigastrium that relieved with analgesics, came for pain in the lower right quadrant of the abdomen of 48 hours of evolution, accompanied by nausea and loss of appetite. Physical examination revealed tachycardia and abdominal pain on palpation in the right iliac fossa, with a positive Blumberg maneuver; vaginal and rectal examinations were painful. In the surgical act, a cecal appendix was found thickened in the proximal third, turgid, with a hard mass in the distal third and an appendectomy was performed without complications. The evolution was favorable and the patient was discharged. Conclusions: despite the rareness of this condition, the surgeon must know that this type of tumor may be present in an appendicular frame even in young patients in order to take the appropriate surgical behavior and avoid complications to the patient.

Giant appendiceal mucinous cystadenoma treated by laparoscopy: a case report and review of the literature / Cistadenoma mucinoso apendicular gigante tratado por laparoscopia: relato de caso e revisão de literatura

ABSTRACT Appendiceal mucinous cystadenoma is a rare entity, which causes appendicular mucocele. It is more frequent in women over 50 years old. In half of the cases it is asymptomatic. Tomography of the abdomen is the gold standard in its preoperative diagnosis. The treatment is surgical, with good prognosis, the complete resection evolves without appendicular rupture and extravasation. We report a case of a 64-year-old man with appendiceal mucinous cystadenoma. A laparoscopic right hemicolectomy was performed. This therapy that can be safely used to treat appendiceal mucocele, as long as it is cautious.

RESUMO O cistadenoma mucinoso apendicular é entidade rara que causa mucocele apendicular, sendo mais frequente em mulheres acima dos 50 anos. Em metade dos casos, o cistadenoma mucinoso apendicular é assintomático. A tomografia do abdome é o padrão-ouro para um diagnóstico pré-operatório. O tratamento é cirúrgico e tem bom prognóstico; a ressecção completa evolui sem ruptura apendicular e sem extravasamento. Relatamos um caso de paciente homem de 64 anos com cistadenoma mucinoso apendicular. Foi realizada hemicolectomia laparoscópica direita. Esse é um procedimento que pode ser usado com segurança no tratamento de mucocele apendicular, desde que seja executado com cautela.

Diagnostic value of CT texture analysis in the quantification of radiological phenotype for pancreatic cystadenoma / 中华胰腺病杂志

Objective To provide objective parameters for differentiating pancreatic cystic tumors via using computed tomography texture analysis (CTTA) to quantify the special imaging features of pancreatic cystadenomas.Methods Enhanced CT images of pancreas from patients who were admitted in Department of Radiology in First Hospital affiliated with Zhejiang University and First People's Hospital of Hangzhou City and pathologically diagnosed as pancreatic serous cystadenomas (n =48) and mucinous cystadenomas (n =34) from January 2009 to December 2016 were retrospectively analyzed.Regions of interest were drawn on the parenchymal phase CT images in 5 slices according to the border of the tumors.Mean grey level intensity (M),variance (V),entropy (E),skewness (Ske) and kurtosis (Kur) were obtained from fine texture (σ =1.0) to coarse texture (σ =2.5).Receiver operating characteristic (ROC) curve for texture parameters with statistically difference was drawn,and the area under curve (AUC),diagnostic sensitivity and specificity were calculated.The diagnostic accuracy of senior and junior doctors was compared with the traditional CT analysis method.Results Reliability coefficient of the two radiologists was 0.809 ～ 0.997 with high consistency.Compared with mucinous cystic tumors,serous cystadenomas had a significantly different V (5.93 ± 9.02 vs 1.29±0.62),E (2.39±0.61 vs2.02±0.39) and Kur(30.18 ±42.55 vs 8.80-±4.34) in Ske0 of 2.5 (P ＜0.05),and there were no statistically significant differences on other parameters.The AUC of differential parameters for diagnosing two kinds of cystic tumors ranged from 0.56 to 0.84.The diagnostic accuracy of the traditional CT analysis method by junior doctor and senior radiologist was 60％ and 71％,respectively.Conclusions CTTA can not only effectively quantify the heterogeneity of pancreatic cystadenomas,but also is effective in the differentiation.

Mucinous Cystadenoma of the Testis: A Case Report with Immunohistochemical Findings

Mucinous cystadenoma of the testis is a very rare tumor. Herein, we report a case of mucinous cystadenoma arising in the testis of a 61-year-old man, along with a literature review. Computed tomography showed a 2.5-cm-sized poorly enhancing cystic mass. Grossly, the tumor was a unilocular cystic mass filled with mucinous material and confined to the testicular parenchyma. Histologically, the cyst had a fibrotic wall lined by mucinous columnar epithelium without atypia. Immunohistochemical staining was positive for cytokeratin 20 and CDX2, as well as focally positive for cytokeratin 7. The pathologic diagnosis was mucinous cystadenoma.

Ultrasonic diagnosis and pathological comparison of pancreatic serous and mucinous cystadenoma / 重庆医学

Objective To explore the value of ultrasound in diagnosis and differential diagnosis of pancreatic mucinous cystade‐noma and serous cystadenoma .Methods Data of tumor features of sixty seven cases of pancreatic cystadenoma ultrasonographic was retrospectively analyzed .The tumor location ,tumor size ,tumor boundary ,tumor shape ,cavity number and calcification were re‐corded .Then all the data was statistically analyzed .Results Pancreatic cystadenoma occured mostly in middle‐aged women ,there was no significant difference between pancreatic mucinous cystadenoma and serous cystadenoma of the pancreas in age ,gender ,le‐sion location ,lesion size ,shape ,boundary ,cystic wall ,cystic wall nodules(P>0 .05) ,while there were significant differences in with and without clinical symptoms ,cavity number ,diameter of the largest cyst and calcification(P<0 .05) .Conclusion Ultrasonic man‐ifestations of pancreatic cystadenoma has certain characteristics ,when there are clinical symptoms ,cavity number is less than 6 , maximum sac diameter is bigger than 2 cm and there is marginal calcification ,it tends to mucinous cystadenoma;when there is no clinical symptoms ,cavity number is equal to or more than 6 ,maximum sac diameter is equal to or smaller than 2 cm and there is cen‐tral calcification ,it tends to serous cystadenoma .

Mucinous Borderline Ovarian Tumor in Very Old Aged Postmenopausal Woman

Mucinous borderline ovarian tumors (BOTs) occur most often in women between the ages of 20 and 30. Early-stage detection of the condition has a more favorable prognosis. In this case report, the authors present an elderly 93-year old woman who visited our hospital due to severe abdominal pain after being diagnosed with a pelvic mass 2 years ago and not undergoing any treatment since the diagnosis was made. She underwent emergency left salpingo-oophorectomy and was diagnosed with mucinous BOT according to biopsy results.

Abnormally high level of CA-19-9 in a benign ovarian cyst

CA-19-9 antigen is mainly elevated in cases of gastrointestinal tract malignancy, including of the pancreas, colorectum, and biliary tract. CA 19-9 antigen can also be elevated in ovarian mucinous neoplasms, however, as well as in many benign conditions. Markedly raised levels of more than 10,000 U/mL were almost observed in advanced stage of malignancy. We report herein the case of a 37-year-old woman who presented with an abnormally high level of CA 19-9 antigen associated with benign mucinous cystadenoma.

Cistoadenoma mucinoso del apéndice: presentación de un caso / Mucinous Cystadenoma of the Appendix: A Case Report

Este artículo describe el caso de una paciente de 79 años de edad que consultó por dolor abdominal en la fosa iliaca derecha de cuatro días de evolución. La ecografía abdominal mostró una imagen de asa intestinal, con engrosamiento de sus paredes, que se continuaba hacia la pelvis, donde se apreciaba una imagen sacular hipoecoica sin peristalsis, con aumento de ecogenicidad de la grasa mesentérica, que sugirió un proceso inflamatorio apendicular. Una tomografía realizada posteriormente describió una imagen tubular ciega con calcificación en su interior y una ligera alteración de la densidad de la grasa mesentérica adyacente. Se realizó una laparotomía y un estudio microscópico del espécimen en patología, el cual arrojó como resultado un cistoadenoma mucinoso del apéndice.

This article describes a case of a 79 year old female patient, consulting due to four days of abdominal pain in the right iliac fossa. An abdominal ultrasound showed an intestinal loop, with a thickening of its walls, continuing into the pelvis, where a saccular hypoechoic image without peristalsis with increased echogenicity of mesenteric fat was observed. This image suggested an appendicular inflammatory process. A tomography described a blind tubular image with one calcification in its interior and a slight alteration in the density of adjacent mesenteric fat. A laparotomy and a microscopic study of the specimen in pathology were performed, which reported a Mucinous Cystadenoma of the Appendix.

Cytologic Distinctive Features of Brenner Tumor

Herein, we present two cases of Brenner tumor, a rarely occurring neoplasm in the ovaries, obtained via intraoperative fine needle aspiration. The borderline Brenner tumor exhibited marked squamous metaplasia, characterized by individually distributed atypical squamous cells. A benign Brenner tumor associated with mucinous cystadenoma evidenced typical mucinous metaplastic features and transitional foci. These distinctive features may prove helpful in differential diagnosis of varied ovarian tumors, and particularly for intraoperative consultation.

Analysis on the clinicopathological characteristics of hepatobiliary mucinous cystic neoplasms / 肿瘤研究与临床

Objective To study the clinicopathological characteristics of hepatobiliary cystic neoplasms(cystadenoma and cystadenocarcinoma)in order to improve its diagnostic and therapeutic accuracy.Methods A retrospective analysis was done on the clinical materials of 9 cases of cystic biliary tumors hospitalized in the People's Hospital of Rizhao City from May 1993 to May 2007.All cases were confirmed by operation and pathologic biopsy.Results Six cases were biliary cystadenoma with muhilocular cyst.The other three cases were biliary cystadenocarcinoma,two with single cyst and one with multilocular cyst.Of the three cystadenocarcinorna,two cases had mural nodules and one case had papillary excrescences and cystic wall thickening.Irregular thickening of internal sept.was shown in the multilocular cyst cases.Two had calcification.Enhancement of the wall.internal septa and nlasses were seen in all the malignant tumors on CT scans. Metastatic lymph node was found in one cage. Conclusion There were no special clinical characteristics in difierentiation between hiliary cystadenoma and cystadenocarcinoma. Single cyst, mural nodules and papillary excrescences,irregular thickening of cystic wall and internal septa,coarse calcification and metastatic lymph node increase the likelihood of the diagnosis of the malignant tumors.But the diagnostic differentiation between cystadenoma and cystadenocarcinoma depends on pathology.

Morphological Classification of Serous Cystic Tumor (SCT) of Pancreas and its Clinical Significance / 한국간담췌외과학회지

PURPOSE: Honeycomb microcystic tumor is typical for SCT, but various SCTs including oligocystic tumor have been frequently reported. We classified SCT morphologically according to the gross and radiologic feature, and we analyzed the clinical features for the subtypes of SCT. We also suggest the guidelines for the differential diagnosis from mucinous cystic tumors (MCT) and the appropriate management. METHODS: This study enrolled 31 patients with SCT and 37 patients with MCT of the pancreas that were treated from Jan. 1992 to Oct. 2003 at Seoul National University Hospital. When the SCTs were classified according to cyst size and multiplicity, 13 were microcystic tumor and 18 were macrocystic tumor. We then compared microcystic SCT with mcrocystic SCT and we also compared macrocystic SCT with MCT. RESULTS: The mean age of patients with SCT was 50 (range: 31~77) and the male : female ratio was 1 : 3. The head : tail ratio was 14 : 18. There was no malignant SCT and no tumor recurrence. There was no difference between the microcystic and macrocystic type tumors according to the patients' age, gender and symptoms, and for the tumors' location and size. But preoperative misdiagnosis occurred 15.4% of the time for the microcystic type and 61.1% of the time for the macrocystic type (p=0.01). When we compared macrocystic SCT with MCT, there was no difference in the patients' age and symptoms, or for the tumors' size and the CA19-9 level in the serum. However, a difference was found for the tumors' location and the patients' gender ratio. There was a difference for the tumor location (p=0.043) and the patients' gender ratio (p=0.082). CONCLUSION: According to morphological features, we could classify SCT into two types (microcystic vs. macrocystic). Microcystic SCT can be accurately diagnosed at the preoperative stage, so conservative treatment and observation is possible. Macrocystic SCT is difficult to differentiate from the other pancreatic cystic tumors with malignant potential, so resection is recommended.