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.

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.

Neoplasia mucinosa gigante de páncreas: presentación de caso clínico y revisión de la literatura / Giant mucinous neoplasm of the pancreas: presentation of a case and review of the literature

Female, 34 year-old patient with diffuse abdominal pain, bloating, and early satiety. Results from a study performed show a complex cystic mass in the pancreas with positive pancreatic mucinous cystadenoma histology. Cystadenoma/Mucinous cystadenocarcinoma represent 10 percent of cystic tumors within the pancreas, which occurr almost exclusively in women. Grossly they are uni or multilocular and contain dense, rich in mucinous matter. Histologically they exhibit columnar epithelium with presence of ovarian stroma. They vary in size, with a 10 cm average. Given their malignancy risk, surgical resection is recommended. Ultrasonography (US) helps to identify these lesions, however fails to provide a definitive diagnosis. Computed tomography (CT) and Magnetic resonance imaging (MRI) have higher accuracy, helping to identify aggressive nature in 75-90 percent. MRI is the test of choice for its resolution capacity. Endoscopic US allows for better characterization and for conducting fine-needle aspiration (FNA) for biochemical and cytological analysis of the liquid, achieving a significant increase in the diagnosis specificity. The differential diagnosis must be performed with other cystic lesions, considering that the final diagnosis is histological. The American College of Radiology suggests the use of surgical resection of mucinous neoplasms of the pancreas, Intraductal papillary or mucinous tumors the IPMT main duct and branch (if symptomatic, growing progressively, > 3 cm, have solid component and/or main duct dilation associated)...

Paciente 34 años, femenino, con dolor abdominal difuso, meteorismo y saciedad precoz. Se realiza estudio con imágenes que demuestran una gran masa quística compleja del páncreas cuya histología fue positiva para cistoadenoma mucinoso de páncreas. Los cistoadenomas/cistoadenocarcinomas mucinosos representan el 10 por ciento de los tumores quísticos del páncreas y se presentan casi exclusivamente en mujeres. Macroscópicamente son uni o multicavitados y contienen material denso, rico en mucina. Histológicamente presentan epitelio cilíndrico con presencia de estroma ovárico. Su tamaño es variable con promedio de 10 cm. Dado el riesgo de malignización se prefiere resección quirúrgica. La ultrasonografía (US) identifica estas lesiones, sin embargo, no llega a diagnóstico definitivo. La tomografía computarizada (TC) y la resonancia magnética (RM), presentan una precisión mayor, ayudando a diferenciar el carácter agresivo en 75-90 por ciento. La RM es el examen de elección por su capacidad de resolución. La US endoscópica permite una mejor caracterización y la realización de punción-aspiración con aguja fina (PAAF) para el estudio bioquímico y citológico del líquido, consiguiendo aumentar considerablemente la especificidad del diagnóstico. El diagnóstico diferencial debe realizarse con otras lesiones quísticas, teniendo en cuenta que el diagnóstico definitivo es histológico. El American College of Radiology sugiere resección quirúrgica de las neoplasias mucinosas de páncreas, y de los tumores papilares mucinosos intraductales (TPMI) de ducto principal y de rama (si son sintomáticos, crecen en forma progresiva, presentan un diámetro > 3 cm, presentan componente sólido y/o se asocian dilatación del conducto principal)...

A Case of Primary Retroperitoneal Mucinous Cystadenoma Arising from the Retropancreatic Area / 대한소화기학회지

Primary retroperitoneal mucinous cystadenoma is an extremely uncommon tumor, even though mucinous cystadenoma often develops in the ovary and less frequently in the pancreas. A 21-year-old female was admitted to our hospital due to severe abdominal pain. A well-demarcated, oval shaped cystic tumor at the retropancreatic area with displacement of the pancreas and surrounding major vessels was observed on CT and MRI. Exploratory laparotomy was performed, and complete excision of the entire cyst was performed without complication. The pathologic finding was consistent with primary retropancreatic mucinous cystadenoma. To the best of our knowledge, this report is the first to describe a case of retropancreatic mucinous cystadenoma arising from the retropancreatic area in Korea.

MR Imaging Findings of Extraovarian Endocervical Mucinous Borderline Tumors Arising from Pelvic Endometriosis

We report MR imaging findings of a rare case of endocervical mucinous borderline tumor (MBT) involving the cul-de-sac and left fallopian tube arising from extensive pelvic endometriosis with pathologic correlation in a 35-year-old woman presented with vague pelvic pain. Endocervical MBT is a type of endometriosis-associated carcinoma. Imaging findings of endocervical MBT are unilocular or oligolocular cystic lesions with enhancing mural nodules, which are different from those of the more common intestinal type MBT.

Mucinous cystadenoma in a horseshoe kidney: report of a case with review of literature

Renal mucinous cystadenoma is very rare with five documented cases in medical literature. Out of these, two developed in horseshoe kidneys. The occurrence of mucinous cystadenoma in horseshoe kidneys is extremely rare and may represent a disorder, wherein such anomalous kidneys may have a tendency to have mucinous tumors taking origin from sequestrated segments of renal pelvic epithelium in the parenchyma. Surgical intervention and thorough histopathologic sampling is required for the diagnosis. It is important to be aware of mucinous cystadenomas while evaluating cystic masses occurring in horseshoe kidney. We report the case of a 52-year old lady who presented with vague abdominal discomfort and on evaluation was found to have a horseshoe kidney with left renal huge cystic lesion with wall enhancement on computerized tomography [CT] scan suggesting malignancy. She underwent left radical nephrectomy with excision of the isthmus. The histological examination revealed a mucinous cystadeno

Cistoadenoma mucinoso de pâncreas durante a gravidez / Mucinous cystadenoma of the pancreas developing during pregnancy

Cistoadenoma mucinoso de pâncreas durante a gravidez é extremamente raro e relatado somente cinco vezes na literatura. Nós descrevemos caso de uma mulher de 26 anos, na sua segunda gestação, com um acentuado aumento de volume intra-abdominal por massa cística, cuja gestação foi interrompida durante a trigésima primeira semana por severa pré-eclâmpsia. A cirurgia de retirada do cisto ocorreu 26 dias após o parto, com enucleação total da lesão. O exame anatomopatológico evidenciou o cisto como cistoadenoma mucinoso, que mediu 23x20x15 cm e pesou 9070 g. Até onde é do nosso conhecimento, é um dos maiores cistoadenomas mucinosos pancreáticos relatados durante a gestação

Mucinous cystadenoma of the pancreas during pregnancy is an extremely rare condition and was reported only five times in the literature. We report the case of a 26-year-old female who, in her second pregnancy, had a sharp intra-abdominal volume increase due to cystic mass, whose pregnancy was interrupted at the thirty-first week of gestation because of severe pre-eclampsia. The surgery to remove the cyst was performed 26 days after delivery, with total enucleation of the lesion. The anatomico-pathological examination showed a mucinous cystadenoma that measured 23x20x15 cm and weighed 9,070 g. To the best of our knowledge this is one of the largest pancreatic mucinous cystadenomas reported during pregnancy

Cistoadenoma mucinoso de apéndice: informe de un caso / Mucinous cystadenoma of the appendix: case report

Introducción: La patología apendicular representa más de 50% de la actividad quirúrgica general, y dentro de ésta hay que considerar las raras, entre las que se incluyen los mucoceles, cuya incidencia es mayor en mujeres (4/1) y en pacientes con edad superior a 50 años. El objetivo de este trabajo es informar un caso de cistoadenoma mucinoso de apéndice. Caso clínico: Hombre de 34 años de edad con diagnóstico a los nueve años de edad de artritis reumatoide juvenil; con prótesis bilateral de cadera a los 22 años. Presenta amiloidosis renal desde 1998 y se encuentra en tratamiento con esteroides hasta el momento de este informe. El cuadro clínico se inició un año atrás, cuando en una tomografía axial computarizada de abdomen de control se encontró tumoración en la fosa iliaca derecha, confirmada por colonoscopia en ciego. Por diagnóstico presuntivo de lipoma fue programado para cirugía; en el transoperatorio se encontró gran tumoración de pronóstico reservado, por lo que se decidió hemicolectomía derecha. El informe de patología de la pieza quirúrgica fue cistoadenoma mucinoso. Conclusiones: La sintomatología del cistoadenoma es inespecífica. Los métodos de diagnóstico incluyen rayos X, ultrasonido, tomografía axial computarizada y colonoscopia. El cistoadenoma es la forma más común de los mucoceles apendiculares y el protocolo de diagnóstico es igual que para patología de apéndice cecal. El tratamiento de elección es la cirugía y depende del tamaño del mucocele. El pronóstico es bueno con el tratamiento adecuado.

BACKGROUND: Pathology of the appendix represents >50% of surgical activity. It is necessary to consider rare pathologies such as mucoceles. These have a high frequency in females with a F/M ratio of 4:1, as well as in patients >50 years of age. The objective of this study is to report on a case of mucinous cystadenoma of the appendix. CLINICAL CASE: We present the case of a 34-year-old male with a history of juvenile rheumatoid arthritis diagnosed at 9 years of age. At 22 years of age, the patient underwent bilateral hip arthroplasty. Since 1998, the patient has presented with renal amyloidosis and has been under steroid treatment to date. The current problem evolved 1 year ago during control studies for his disease. Computed tomography (CT) of the abdomen was done, demonstrating a tumor in the right iliac fossa. Colonoscopy confirmed a tumor with smooth edges located in the cecum. Surgery was recommended with a diagnosis of lipoma of the cecum. During surgery, a large tumor was found, indicating a poor prognosis. Right hemicolectomy was done. Surgical specimen was sent to pathology with a report of mucinous cystadenoma. CONCLUSIONS: The group of symptoms of cystadenoma is nonspecific. Diagnostic methods include X-rays, ultrasound, CT and colonoscopy. Mucinous cystadenoma is the most common form of mucocele of the appendix. Diagnostic protocols are the same for benign appendix pathology. Treatment is surgical and type of surgery depends on the size of the mucocele. Mucoceles of the appendix are pathologies with a favorable prognosis when appropriate treatment is done.

Cistoadenoma mucinoso de apêndice em mulher idosa / Mucinous cystadenoma of the appendix in elderly woman

O cistoadenoma mucinoso de apêndice é um diagnóstico raro. Sua principal apresentação clínica é dor em fossa ilíaca direita aguda ou crônica, podendomimetizar apendicite aguda ou doença inflamatória intestinal. No transoperatório seu aspecto pode ser confundido com neoplasia maligna. O caso relatado descreve uma paciente idosa com quadro agudo de dor em quadrante inferior direito do abdome, submetida à laparotomia exploradora devido à hipótese de apendicite aguda. No transoperatório,foi realizada íleo-colectomia direita, pela suspeita de se tratar de um processo neoplásico maligno, mas o exame anatomopatológico evidenciou cistoadenoma mucinoso de apêndice

Mucinous cystadenoma of the appendix is a rare diagnosis. Its main clinical presentation is acute or chronic pain in the right iliac fossa, which may mimic acute appendicitis or inflammatory bowel disease. In the transoperative stage its aspect may be mistaken for malignant neoplasm. The case reported here describes an elderly patient with picture of acute pain in the left lower quadrant of the abdomen, submitted to exploratory laparotomy due to suspected acute appendicitis. In the transoperative stage right ileocolectomy was performed because of suspicion of a malignant neoplastic process, but the anatomicopathological examination showed mucinous cystadenoma of the appendix

Torus Hyperplasia of the Pyloric Antrum

Primary or idiopathic hypertrophy of the pyloric muscle in adult, so called torus hyperplasia, is an infrequent but an established entity. It is caused by a circular muscle hypertrophy affecting the lesser curvature near the pylorus. Since most of the lesions are difficult to differentiate from tumor, distal gastrectomy is usually preformed to rule out most causes of pyloric lesions including neoplastic ones through a pathological study. A 56-yr-old man with a family history of gastric cancer presented with abdominal discomfort of 1 month duration. Upper gastrointestinal endoscopy showed a 1.0 cm sized irregular submucosal lesion proximal to the pylorus to the distal antrum on the lesser curvature. On colonoscopy examination, a 1.5 cm sized protruding mass was noticed on the appendiceal orifice. Gastrectomy and cecectomy were done, and histological section revealed marked hypertrophy of the distal circular pyloric musculature and an appendiceal mucocele. To the best of our knowledge, this is the first case of torus hyperplasia with appendiceal mucocele which is found incidentally.

Tumor carcinoide apendicular / Carcinoid of the appendix. A case report

Tumors of the appendix constitute an heterogeneous group of malignancies with a variable evolution and prognosis...The aim of this reporte was to determine the prevalence of carcinoid tumors of the cecal appendix and its relationship with age, sex, clincal features and introspctive suspicion.

Neoplasias quísticas pancreáticas / Cystic neoplasms of the pancreas

BACKGROUND: Cystic neoplasms of the pancreas represent between 5% and 10% of all pancreatic tumors. Due to their malignant potential, surgery is indicated. Because of the uncommon nature of this pathology, the aim of this study was to present a series of six patients who were operated on for a cystic tumor and to analyze the morphological characteristics, surgical experience and follow-up. METHODS: This was a retrospective study. Clinical files were studied, as well as surgical and pathological registries from patients diagnosed with cystic neoplasms of the pancreas. Five females and one male were included with a mean age of 54 +/- 15 years. The main symptom was abdominal pain. RESULTS: Clinical course and CT scan results were the criteria for suspecting the diagnosis. In 4/6 patients, the tumor was located within the body and tail of the pancreas. The most frequent intervention was distal pancreatectomy. There was no mediate operative mortality in a 30-day period. Histopathological diagnoses were three serum cystadenomas, two mucinous cystadenomas and one cystadenocarcinoma. After a 4-year follow-up, no tumor recurrences have been reported in the surviving patients. CONCLUSIONS: The natural history of cystic neoplasms of the pancreas is generally benign, but complications may occur by direct invasion of neighboring structures. Clinical course, tomography, pancreatography and punction are fundamental for its treatment.

Tumor borderline mucinoso ovárico gigante con microinvasión / Borderline mucinous ovarian tumor with microinvasion

Se presenta caso clínico de tumor borderline mucinoso gigante de ovario derecho operado. Se describe una breve revisión de la literatura, incluyendo los conceptos de microinvasión, arquitectura micropapilar, implantes, así como algunas características de su patogenia y tratamiento.

Tumor de ovario borderline mucinoso: a propósito de un caso clínico / Mucinous borderline ovarian tumor: a clinical case

Los tumores de ovario bordeline son neoplasias de bajo grado de malignidad, representan el 10 a 15 por ciento del total de los tumores de ovario. Suelen diagnosticarse en estadios tempranos, tienen baja probabilidad de recurrencia y buen pronóstico. Se presenta un caso clínico de una paciente con diagnóstico de tumor mucinoso bordeline a partir del cual se hace una revisión destacando puntos relevantes de la patología, diagnóstico y diferentes modalidades de terapéutica.

Tumores carcinóides de ovário: relato de caso e revisão de literatura / Ovarian carcinoid tumors: a review of the literature and a case report

Objetivo: A propósito das neoplasias neuroendócrinas do ovário - carcinóide típico - que pela histogênese correspondem à linhagem de tumores germinativos, propõem-se trazer maior elucidação sobre o tema, através de relato de caso seguida de revisão bibliográfica. Métodos -Foram revisados, consecutivamente e retrospectivamente, todos os casos descritos na literatura médica que se encontram...