Cistomatose ceruminosa em felino Persa: relato de caso / Feline ceruminous cystomatosis in a Persian cat: a case report

Neste trabalho, os autores relatam o caso de um gato Persa, macho, de cinco anos e meio de idade, atendido na Cidade do Rio de Janeiro apresentando nódulos auriculares diagnosticados por histopatologia como cistomatose ceruminosa. Por tratar-se de uma afecção pouco comum, de etiologia desconhecida e fácil resolução, os autores objetivaram divulgá-la, descrevendo os principais sinais clínicos e tratamentos. Como terapia, foi realizadaa excisão cirúrgica dos cistos com bisturi elétrico e não houve recidiva nos últimos três anos. Sugere-se que os cistos benignos podem malignizar, além de dificultarem o asseio do conduto auditivo levando ao acúmulo de cerúmen e, consequentemente, a infecções secundárias (otite externa) por proliferação microbiana.

In this case report the authors describe the presence of nodules in the concave pinna of a five years-old male Persian cat brought to veterinary clinic care in Rio de Janeiro in 2015, diagnosed by histopathology as ceruminous cystomatosis. As it is an uncommon disorder of unknown etiology and easy treatment, the authors aim to elucidate the main clinical signs associated and treatment used. The ablation of cysts was performed withan electric bistoury and no recurrency was reported within three years. It is suggested that benign cysts can progress to malignancy, besides, lesions can disrupt normal self-cleaning of the auditory canal leading to secondary otitis externa by microbial proliferation.

Histopathological Study of Ovarian Tumors.

The ovarian tumors show wide variation in the clinical and morphological features. The incidence also varies in different parts of the world. This is a histopathological study of 100 ovarian tumors over a period of 5 years in our institute. The ovarian tumors were classified according to WHO Classification. The aim of this work was to study the incidence and gross and microscopic features of different benign and malignant ovarian tumors. Benign tumors were more common than malignant tumors. Among benign tumors serous cystadenoma (41.89%) was the most common followed by mucinous cystadenoma (29.72%) and mature cystic teratoma (16.21%). Among malignant ovarian tumors, the most common type was serous cystadenocarcinoma (38.46%) followed by dysgerminoma (11.53%) and clear cell carcinoma (11.53%). Majority of the ovarian tumors were surface epithelial tumors (77%) followed by germ cell tumors (16%) and sex cord stromal tumors (6%).

Cistoadenoma biliar como diagnóstico diferencial de hidatidosis hepática: reporte de caso / Biliary cystadenoma as differential diagnosis of hepatic hydatidosis: case report

The biliary cystadenoma represents a rare cystic tumor that may compromise the liver and the extrahepatic bile duct. This tumor accounts for less than 5 percent of solitary non-parasitic cysts of the liver. Our aim is to report a clinical case as well as to discuss some issues concerning diagnosis and treatment options for this type of injuries.

El cistadenoma biliar es un tumor quístico infrecuente que puede comprometer el hígado y la vía biliar extrahepática. Este tumor representa menos del 5 por ciento de los quistes únicos no parasitarios del hígado. Nuestro objetivo es reportar un caso clínico y discutir algunos aspecto respecto al diagnóstico y tratamiento de este tipo de lesiones.

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.

Hepatobiliary cystadenoma with mesenchymal stroma--a case report.

Hepatobiliary cystadenoma with mesenchymal stroma (HCMS) is a rare lesion characterized by multiloculated cyst lined by columnar epithelium ad mesenchymal stroma. It occurs exclusively in females and is intrahepatic in location with only 17% cases arising in extrahepatic biliary tree. Exact histogenesis is not known, but it is hypothesized the HCMS arises from ectopic embryonic tissue destined to form the adult gall bladder. HCMS has got a malignant potential and requires radical excision.

MR Imaging Findings of Ovarian Cystadenofibroma: Clues for Making the Differential Diagnosis from Ovarian Malignancy

No Abstract Available.

Biliary Cystic Neoplasm: Biliary Cystadenoma and Biliary Cystadenocarcinoma / 대한소화기학회지

Biliary cystic tumors, such as cystadenoma and cystadenocarcinoma, are rare cystic tumors of liver accounting for fewer than 5% of all intrahepatic cysts of biliary origin. Most biliary cystic tumors arise from intrahepatic bile duct and 10-20% arise from extrahepatic bile duct like common hepatic duct, common bile duct, and gallbladder. The first case report of biliary cystic neoplasm in Korea dated back to 1975 by Bae et al, and over 40 cases of cystadenoma and 35 cases of cystadenocarcinoma were reported since then. These tumors usually present in middle-aged women with a mean age of 50 years. Biliary cystadenomas are lined by single layer of cuboidal or columnar epithelium and are very often multilocular with septal or papillary foldings. Over 80% of cystadenoma have dense mesenchymal stroma composed of dense spindle cells, like ovary. The epithelial lining of cystadenocarcinoma exhibits cellular atypia, mitotic activity, and infiltrative growth, but part of lining epithelium retain the feature of cystadenoma, which support the adenoma-carcinoma sequence. The size of tumors varies from 1.5 to 35 cm. Many patients are asymptomatic, except for the presence of palpable mass. When symptoms are present, they include epigastric or right upper quadrant pain or jaundice by enlarged mass. Biliary cystic tumor should be considered when a single or multilocular cystic lesion with papillary infoldings is detected in the liver by computed tomogram (CT) or ultrasound (US). Cystic wall and internal foldings can be seen enhanced by enhanced CT. US reveals a hypoechoic cystic mass with echogenic septation or papillary infoldings. Cystadenocarcinoma should be suspected when there is elevated mass or nodule in the wall or foldings, or thickened cystic wall on CT or US. But it is extremely difficult to differentiate between cystadenoma and cystadenocarcinoma by imaging alone. Increased tumor markers, carcinoembryonic antigen and carbohydrate antigen 19-9, in serum or cystic fluid have been reported in biliary cystic tumor. But tumor markers cannot distinguish cystadenocarcinoma from cystadenoma or both from other cystic lesions of liver. Malignant cells are not usually recovered in patients with cystadenocarcinoma who underwent cystic fluid cytology before and during surgery. The treatment of choice is radical excision of the mass by means of lobectomy or wide tumor excision. Aspiration, marsupialization, and drainage must be avoided. Inadequate excision of both cystadenoma and cystadenocarcinoma may lead to recurrence. Prognosis after complete excision is excellent.

Significances of Serum Level and Immunohistochemical Stain of CA19-9 in Simple Hepatic Cysts and Intrahepatic Biliary Cystic Neoplasms / 대한소화기학회지

BACKGROUND/AIMS: In spite of various diagnostic modalites, biliary cystic neoplasms (biliary cystadenoma and cystadenocarcinoma) remain to be difficult to diagnose preoperatively. Recently, there are some reports that elevated CA19-9 level in serum and/or cystic fluid could be a useful finding in the differential diagnosis of biliary cystic neoplasm. This study aimed to evaluate the expression of CA19-9 and to elucidate its significances in intrahepatic biliary cystic neoplasms and simple hepatic cysts. METHODS: In 8 patients with biliary cystic neoplasms and 6 simple hepatic cysts, symptoms, radiologic and laboratory findings were reviewed retrospectively. In 5 biliary cystic neoplasms (4 bililary cystadenomas, 1 biliary cystadenocarcinoma) and 5 simple hepatic cysts, immunohistochemical stainings for CA19-9 were performed with formalin-fixed, paraffin-embedded tissues. RESULTS: In 8 biliary cystic neoplasms, two cases were suspected as biliary cystadenoma preoperatively and 6 cases could not be distinguished from simple cysts or cholangiocarcinoma preoperatively. In 6 simple hepatic cysts, 3 cases were diagnosed preoperatively and 3 cases could not be distinguished from biliary cystadenoma or pancreatic pseudocyst preoperatively. Expression of CA19-9 in simple hepatic cysts and biliary cystic neoplasms were 80% in both groups. Expression of CA19-9 is not related to the elevated level of CA19-9 in serum. CONCLUSINOS: Our data suggests that the elevated level of CA19-9 in serum may not be helpful in the preoprative diagnosis of biliary cystic neoplasm.

MR Imaging Findings of Ovarian Cystadenofibroma and Cystadenocarcinofibroma: Clues for the Differential Diagnosis

OBJECTIVE: We wanted to assess the MR imaging findings of ovarian cystadenofibroma and cystadenocarcinofibroma, and we wanted to find clues for making the differential diagnosis between them. MATERIALS AND METHODS: The MR images of 12 pathologically proven cystadenofibromas and two cystadenocarcinofibromas were reviewed, with a focus on the internal architecture, signal intensity and enhancement. RESULTS: All the tumors appeared as multilocular cysts, except for a single unilocular cystic mass and a single solid mass. The previously reported characteristic MR findings of cystadenofibroma (a multilocular cystic mass with a T2-dark-signal-intensity solid component containing small cystic locules) were found in only 43% of the tumors (6/14). Diffuse or partial thickening of the cyst wall with T2-dark signal intensity without a definite solid component was as common as the previous reported findings (6/14). Two cystadenocarcinofibromas showed more prominent solid portions with higher T2-signal intensities and stronger enhancement than did the cystadenofibromas. CONCLUSION: Diffuse or partial thickening of the cyst wall with dark-signal-intensity in multilocular cystic masses may suggest ovarian cystadenofibroma, and this type of appearance may be as common as the previously reported characteristic appearance. A prominent solid component with a higher T2-signal intensity and strong enhancement are the typical findings of cystadenocarcinofibroma.

Unilocular Extrahepatic Biliary Cystadenoma Mimicking Choledochal Cyst: A Case Report

We report here on a case of extrahepatic biliary cystadenoma arising from the common hepatic duct. A 42-year-old woman was evaluated by us to find the cause of her jaundice. Ultrasonography and CT showed a cystic dilatation of the common hepatic duct and also marked dilatation of the intrahepatic duct. Direct cholangiography demonstrated a large filling defect between the left hepatic duct and the common hepatic duct; dilatation of the intrahepatic duct was also demonstrated. Following excision of the cystic mass, it was pathologically confirmed as a unilocular biliary mucinous cystadenoma arising from the common hepatic duct.

Cystic granulosa cell tumor of the ovary--a case report.

A case of cystic granulosa cell tumor of ovary in a 32 year old woman is described. The patient presented with abdominal mass without any signs and symptoms of hyperestrinism and virilization. Ultrasonographically and grossly a diagnosis of benign cystadenoma was considered. Histopathology confirmed the diagnosis of cystic granulasa cell tumor.

Cistoadenoma biliar hepático: relato de três casos e revisäo da literatura / Hepatic biliary cystadenoma: report of 3 cases and literature review

O cistoadenoma biliar hepático é um tumor benigno raro que se apresenta como lesao cística multisseptada. Sua importância clínica está no fato de que é considerado uma lesao pré-neoplásica, devendo portanto, ser tratado pela ressecçao cirúrgica. Os autores relatam três casos, discutindo o diagnóstico e o tratamento desses cistos.

Tumor sólido-cístico de pâncreas. Relato de caso / Solid cystic tumor of pancreas. Case report

O tumor sólido cístico de pâncreas é uma entidade rara que acomete indivíduos jovens do sexo feminino. A sintomatologia é discreta. O tumor é de tamanho variável (2 a 10 cm) e coberto por uma cápsula fibrosa. Ao contrário do adenocarcinoma de células ductais do pâncreas, que é o tumor mais comum, este é de crescimento lento, raramente é acompanhado de metástases e tem bom prognóstico. Relato de um caso e revisäo da doença.

Pseudomixoma peritoneal y mucocele apendicular secundario a cistadenoma y cistadenocarcinoma del apéndice cecal. Informe de dos pacientes / Peritoneal pseudomyxoma and appendicular mucocele due to cystadenoma and cystadenocarcinoma of the cecal appendix: Report of two patients

Objetivo. Informar nuestra experiencia con dos enfermos de mucocele del apéndice cecal, secundario uno a cistadenocarcinoma y el otro a cistadenoma mucinosos. Sede Hospital General de Zona, segundo nivel de atención médica. Descripción de los casos. Se trató de dos pacientes del sexo femenino, de 54 años de edad, a quienes se les practicó cirugía urgente por abdomen agudo secundario a apendicitis aguda complicada. Las dos presentaron apéndice cecal con gran dilatación, perforación y múltiples adherencias interasa debido a la reacción plastica asociada: en ambas se realizó hemicolectomía derecha con ileostomía debido a que el ciego y colon ascendente se encontraban involucrados. La evolución fue defierente en cada enferma, una de las pacientes requirió de dos reintervenciones quirúrgicas por sepsis residual. El estudio histopalológico informó en una paciente cistadenoma mucinoso y en la otra cistadenocarcinoma también mucinoso. Discusión. El mucocele apendicular es una entidad poco frecuente, está asociado a la formación de quistes de retención, que se generan a partir de neoplasias productoras de mucina como los que se presentan en este informe, las complicaciones incluyen: pseudomixoma y la presencia de gran reacción peritoneal con múltiples adherencias. El tratamiento consiste generalmente en la apendicectomía, sin embargo, en algunos pacientes debe asociarse la hemicolectomía con ileostomía por invasión directa al ciego y colon. Conclusión. Se trata de un problema de aparación espóradica que en muchas ocasiones resulta grave por dificulatades técnicas y manejo quirrúgico

Cystadenoma with mesenchymal stroma mistaken for hepatic hydatid cyst.

Hepatobiliary cystadenoma with mesenchymal stroma occurs uniquely in women, can be associated with other hepatobiliary anomalies, and has the potential for malignant transformation. We describe a case of hepatobiliary cystadenoma with mesenchymal stroma which was initially treated as hepatic hydatid cyst.

Neoplasia cistica diagnosticada como pseudocisto de pancreas: estudo de cinco casos e revisao da literatura / Cystic tumors mistaken for pancreatic pseudocystic: study of 5 cases and review of literature

Os tumores cisticos do pancreas representam cerca de 9 por cento a 13 por cento de todas lesoes cisticas do pancreas, cerca de 1 por cento das neoplasias pancreaticas e sao predominantes em pacientes do sexo feminino. Uma falha em reconhecer a natureza neoplasica de uma lesao cistica do pancreas pode levar a uma terapeutica incorreta. Este trabalho tem o objetivo de relatar cinco pacientes com tumor cistico que foram erroneamente tratados inicialmente como pseudocisto do pancreas. A idade dos pacientes variou entre 21 e 71 anos, com media de 46 anos. Dos cinco pacientes, tres eram portadores de cistadenoma mucinoso e dois eram portadores de cistadenocarcinoma....