Simple liver cysts are common and benign lesions, and most of them are detected by ultrasonography (US) or computed tomography (CT) during a medical checkup. Because simple liver cysts are generally asymptomatic, they do not require treatment, although hemorrhage, infection or rupture may occur in rare cases and these cases must receive proper treatment. The diagnosis of simple liver cysts is usually easy because of their typical morphological findings on US or CT. However, when a liver cyst contains hemorrhage or it is inflamed on imaging studies, it is sometimes difficult to differentiate simple hepatic cysts from such conditions as cystadenoma and cystadenocarcinoma. In this report, we describe a case of simple liver cyst that was complicated by intracystic hemorrhage, and this malady was initially diagnosed as biliary cystadenocarcinoma. We successfully treated this lesion by left lateral segmentectomy.
Cystadenocarcinoma ; Cystadenoma ; Diagnosis ; Hemorrhage* ; Liver ; Mastectomy, Segmental ; Rupture ; Ultrasonography

Cystic hepatocellular carcinoma is unusal, and visualization of the cystic components within hepatic mass lesion have suggested that the lesions were metastatic tumors, primary cystic tumors such as biliary cystadenocarcinoma or cystic papillary cholangiocarcinoma. Although hepatic lesions can be well characterized by noninvasive imaging modalities, findings are often nonspecific. Even for cystic hepatic lesions a considerable diagnostic differential exists. The diagnosis of cystic hepatocellular carcinoma was difficult before the microscopic examination of the biopsy speciemen because of very rare. Then we report an unusual of cystic hepatocellular carcinoma without liver cirrhosis.
Biopsy ; Carcinoma, Hepatocellular* ; Cholangiocarcinoma ; Cystadenocarcinoma ; Diagnosis ; Liver Cirrhosis

Actinomycosis is a rare disease in human and has variable clinical features, which make the diagnosis difficult. Actinomycosis may be confused with malignancy and other inflammatory diseases because of its infiltrative nature and its tendency to invade normal anatomic barriers. We have experienced a case of abdominal actinomycosis combined with ovarian mucinous cystadenocarcinoma and report this case with brief review of literatures.
Actinomycosis* ; Cystadenocarcinoma, Mucinous ; Diagnosis ; Humans ; Ovarian Neoplasms* ; Rare Diseases

Cystadenocarcinoma, Serous ; diagnosis ; pathology ; Female ; Humans ; Ovary ; pathology

Although cystic neoplasms of the pancreas are an uncommon disease, it occures often enough that proper sugicalmanagement depends on accurate preoperative diagnosis. It is very difficult to diagnose accurately by conventionalradiological methods alone. Angiographic findings are fairly characteristic for these tumors, but they are in noway specific. The imaging characteristics of ultrasonography and CT are particularly useful in the diagnosis ofthis particular tumors. This report presents an analysis of 2 cases of cystadenoma and 3 cases cystadenocarcinomaexamined by ultrasonography and CT. Ultrasonography findings are complelx multicytic mass in the pancreas withthick irregular wall, daughter cyst, septa and solid component. These septa and solid component are highlyechogenic if the tumor is mucin producing. Computed tomographic findings are large cyst possessing irregular thickwall, solid component and septa which are enhanced by contrast infusion. Punctate or curvilinear calcification isseen occasionally. Tortuous or beaded vascular collaterals are seen around the cyst. On the other hand, pseudocystis usually a single cyst possessing thin smooth wall, and solid component or septa are unusual in pseudocyst.
Cystadenocarcinoma ; Cystadenoma ; Diagnosis ; Hand ; Mucins ; Nuclear Family ; Pancreas ; Ultrasonography

Cystadenocarcinoma of the salivary gland is a rare malignant tumor. It was first defined as papillary cystadenocarcinoma in the 1991 World Health Organization (WHO) classification, and it was reclassified as cystadenocarcinoma in the 2005 WHO classification. It is a low-grade neoplasm that features slow growing and predominantly cystic growth. We report a case of cystadenocarcinoma occurring on the parotid gland of a 61-year-old female patient presenting palpable mass on her left cheek. Preoperative examination may not reveal typical malignant characteristics. Such as in our case, the differential diagnosis between cystadenocarcinoma and benign lesion is difficult occasionally. We discuss the clinical and histopathological features of cystadenocarcinoma with the review of the literature.
Cheek ; Cystadenocarcinoma* ; Cystadenocarcinoma, Papillary ; Diagnosis, Differential ; Female ; Humans ; Middle Aged ; Parotid Gland ; Salivary Glands ; World Health Organization

Biliary cystadenoma and cystadenocarcinoma are rare tumors which have a good prognosis after complete surgical removal. Correct pre-operative diagnosis depends on the imaging characteristics of the tumors. Computed tomography, Ultrasono-graphy, angiography and cholangiogram are useful diagnostic procedure in biliary cystic tumor but definite diagnosis cannot be made without histologic diagnosis. Before the surgery, cholangioscopy is necessary for deciding operation field. The prognosis of the biliary cystic tumor seems to be much better than that of other solid hepatic tumors. If there is no evidence of metastasis, complete resection of these tumors is, therefore, necessary for these possibly curable disease. Recently, we experienced a 60-year-old woman complained of jaundice and generalized itching sensation, which was diagnosed as biliary mucinous cystadenocarcinoma. We decided operation field by cholangioscopy, and performed left hepatic lobectomy and T-tube choledochojejunostomy. So, we report this case with a review of relevant literature.
Angiography ; Choledochostomy ; Cystadenocarcinoma ; Cystadenocarcinoma, Mucinous* ; Cystadenoma ; Diagnosis ; Female ; Humans ; Jaundice ; Middle Aged ; Mucins* ; Neoplasm Metastasis ; Prognosis ; Pruritus ; Sensation

This study presents the cytologic features of peritoneal washings, with particular emphasis on the cytologic discrimination among serous, mucinous, and endometrioid adenocarcinoma of the ovary. We selected histologically confirmed 27 cases of peritoneal washing : 8 cases of serous cystadenocarcinomas, 5 cases of mucinous cystadenocarcinomas, and 14 cases of endometrioid adenocarcinomas. The most frequent cytologic pattern of three tumors was clusters. Ball pattern was found in serous cystadenocarcinoma(36%) and acinar pattern in endometrioid adenocarcinoma (36%). Mucinous adenocarcinoma showed mucoid background(100%) and endometrioid adenocarcinoma revealed inflammatory background(43%). The cytoplasmic vacuoles were noted in 80%, 13%, and 43% of mucinous, serous, and endometrioid adenocarcinoma, respectively. The endometrioid adenocarcinoma showed prominent nucleoli(64%). In conclusion, the cytologic findings of mucinous cystadenocarcinoma were different from that of serous and endometrioid carcinomas, such as mucoid background, abundant cytoplasm with vacuolated cytoplasm, and peripherally located cytoplasm. Although endometrioid carcinoma showed acinar pattern and prominent nucleoli, the differential diagnosis between serous cystadenocarcinoma and endometrioid adenocarcinoma in peritoneal washing cytology was not always possible.
Adenocarcinoma, Mucinous ; Carcinoma, Endometrioid* ; Cystadenocarcinoma, Mucinous ; Cystadenocarcinoma, Serous ; Cytoplasm ; Diagnosis, Differential* ; Discrimination (Psychology) ; Female ; Mucins* ; Ovary ; Vacuoles

Cystic lesions of the pancreas are being incidentally recognized with increasing frequency and become a common finding in clinical practice. Despite of recent remarkable advances of radiological and endoscopic assessment and a better understanding of natural history of certain subgroups of cystic lesions, differentiating among lesions and making an optimal management plan is still challenging. A multimodal approach should be performed to evaluate incidentally detected cystic lesions. Emerging evidence supports selective nonoperative management for the majority of patients with cystic lesions, but, for those in whom a suspicion of malignancy remains, surgery is indicated. Concerning long-term follow-up, there is limited data to support the ideal modality, intensity, and duration. Therefore, evidence-based guidelines for the diagnosis, management, and follow-up of cystic lesions of the pancreas should be established.
Cystadenocarcinoma, Mucinous/diagnosis/epidemiology/therapy ; Cystadenocarcinoma, Papillary/diagnosis/epidemiology/therapy ; Cystadenocarcinoma, Serous/diagnosis/epidemiology/therapy ; Humans ; Incidence ; Incidental Findings ; Pancreatic Cyst/*diagnosis/epidemiology/therapy ; Pancreatic Neoplasms/*diagnosis/epidemiology/therapy ; Tomography, X-Ray Computed ; Tumor Markers, Biological/blood

Primary retroperitoneal mucinous cystadenocarcinoma is a rare tumor. Only about 30 such cases have been reported in the worldwide literature, and a few Korean cases have been reported. The pathogenesis is not clear, and coelomic metaplasia of the retroperitoneal mesothelium has gained wide support. There is no consensus on the appropriate treatment, but surgical exploration is needed for the diagnosis and treatment, and adjuvant chemotherapy may be recommended following complete surgical excision. The long-term prognosis has not been established. We report here on a 32-year-old woman who was diagnosed as having a retroperitoneal mucinous cystadenocarcinoma with mural nodules of sarcomatoid change. Tumor excision and adjuvant chemotherapy were done and the patient is doing well without any evidence of recurrence at 42 months postoperatively.
Adult ; Cystadenocarcinoma, Mucinous/*diagnosis/pathology/surgery ; Female ; Humans ; Retroperitoneal Neoplasms/*diagnosis/pathology/surgery