OBJECTIVETo study the clinicopathological characteristics of papillary cystadenoma of the epididymis.

METHODSUsing routine pathology and immunohistochemistry, we observed the surgically obtained samples from 2 cases of papillary cystadenoma of the epididymis, analyzed their pathological features and clinical presentations, and reviewed the related literature.

RESULTSThe 2 patients were both adult males. The tumors typically manifested as painless swelling in the epididymis, with occasionally dull pain and tenesmus in 1 of the cases. Pathologically, the lesions exhibited three morphological features, i. e., dilated ducts and small cysts surrounded by fibrous connective tissue, adenoid papillary hyperplasia into the cysts embraced by fibrovascular stroma, and acidophil substance present in the cysts. Immunohistochemistry showed that the tumors were strongly positive for CK8/18, CK7, and EMA, but negative for CK20, CEA, MC, Calretenin, P53, P63, SMA, VHL, and CD10, with the positive rate of Ki-67 <1%. Follow-up visits revealed good prognosis in both cases.

CONCLUSIONPapillary cystadenoma of the epididymis is a rare benign tumor in the male urogenital system, which may be accompanied by the VHL syndrome. Surgery is the first choice for its treatment.

Adult ; Cystadenoma, Papillary ; chemistry ; pathology ; Epididymis ; Genital Neoplasms, Male ; chemistry ; pathology ; Humans ; Immunohistochemistry ; Male ; von Hippel-Lindau Disease

Cystadenoma rarely arises in the parotid gland. It grows slowly without pain. Histopathologically, it is subdivided into papillary cystadenoma and mucinous cystadenoma. Mucinous cystadenoma arising from the salivary gland is a very rare benign tumor. A 25-year-old female patient visited our hospital with a left infra-auricular mass. Computed tomography scan showed a 3.1x2.3 cm size heterogeneous lesion with an irregular margin in the left parotid gland. Sono guided gun biopsy was performed to reveal fibrous tissue with atypical epithelial cell with mucin. Suspecting mucoepidermoid carcinoma, partial parotidectomy was performed for treatment and diagnosis. Histopathologic exam revealed mucinous cystadenoma. Cystadenoma of salivary gland has no distinct clinical feature, and is difficult to differentiate clinically from other salivary gland tumors as well as its malignancy. Thus, the possibility of malignancy must be considered for differential diagnosis.
Adult ; Biopsy ; Carcinoma, Mucoepidermoid* ; Cystadenoma ; Cystadenoma, Mucinous* ; Cystadenoma, Papillary ; Diagnosis ; Diagnosis, Differential ; Epithelial Cells ; Female ; Humans ; Mucins* ; Parotid Gland* ; Salivary Glands

No abstract available.
Cystadenoma, Papillary* ; Fallopian Tubes* ; Female ; von Hippel-Lindau Disease*

Cystadenoma, Papillary ; surgery ; Humans

OBJECTIVE: To describe the computed tomography (CT) features of neuroendocrine tumors (NETs) and solid pseudopapillary tumors (SPTs) with unilocular cyst-like appearance, and to compare them with those of unilocular cystic tumors of the pancreas. MATERIALS AND METHODS: This retrospective study was approved by our Institutional Review Board, and informed consent was waived. We included 112 pancreatic tumors with unilocular cyst-like appearance on CT (16 solid tumors [nine NETs and seven SPTs] and 96 cystic tumors [45 serous cystadenomas, 30 mucinous cystic neoplasms, and 21 branch-duct intraductal papillary mucinous neoplasms]). Two radiologists reviewed the CT images in consensus to determine tumor location, long diameter, morphological features, wall thicknesses, ratio of wall thickness to tumor size, wall enhancement patterns, intratumoral contents, and accompanying findings. Fisher's exact test was used to analyze the results. RESULTS: All 16 solid tumors had perceptible walls (mean thickness, 2.7 mm; mean ratio of wall thickness to tumor size, 7.7%) with variable enhancement. Four NETs and seven SPTs had hemorrhage, calcifications, and/or mural nodules. Six CT findings were specific for solid tumors with unilocular cyst-like appearance: a thick (> 2 mm) wall, uneven thickness of the wall, high ratio of wall thickness to tumor size, hyper- or hypo-attenuation of the wall in the arterial and portal phase, and heterogeneous internal contents. When three or more of the above criteria were used, 100% specificity and 87.5-92% accuracy were obtained for solid tumors with unilocular cyst-like appearance. CONCLUSION: A combination of CT features was useful for distinguishing solid tumors with unilocular cyst-like appearance from unilocular cystic tumors of the pancreas.
Adenocarcinoma, Mucinous/diagnosis/*radiography ; Adult ; Aged ; Carcinoma, Papillary/diagnosis/*radiography ; Cystadenoma, Serous ; Diagnosis, Differential ; Female ; Humans ; Male ; Middle Aged ; Neuroendocrine Tumors/diagnosis/*radiography ; Pancreatic Neoplasms/diagnosis/*radiography ; Retrospective Studies ; Sensitivity and Specificity ; Tomography, X-Ray Computed

Cerebellum ; surgery ; Cystadenoma, Papillary ; complications ; pathology ; surgery ; Epididymis ; pathology ; surgery ; Follow-Up Studies ; Genital Neoplasms, Male ; complications ; pathology ; surgery ; Humans ; Keratin-7 ; metabolism ; Kidney ; surgery ; Male ; Middle Aged ; Mucin-1 ; metabolism ; Vimentin ; metabolism ; von Hippel-Lindau Disease ; complications ; metabolism ; pathology ; surgery

Cystadenoma of the liver is a rare neoplasm. Although many cystadenomas are asymptomatic, symptoms can include abdominal pain, postprandial epigastric discomfort, and nausea. Dramatic changes in hepatic imaging techniques have been helpful for diagnosing cystic lesions of the liver, such as simple cyst, hydatid cyst, cystadenoma, cystadenocarcinoma, and metastatic neuroendocrine tumors. However, it remains difficult to differentiate cystadenoma from cystadenocarcinoma for multiseptated cystic hepatic lesions with papillary projection on computed tomography (CT) and magnetic resonance imaging (MRI). Here we report the case of a 47-year-old woman with several months of postprandial discomfort and abdominal fullness. CT and MRI revealed multiseptated cystic lesions with papillary excrescences. A left hemihepatectomy was performed. Histology showed a benign mucinous cystic tumor with ovarian-like stroma.
Abdominal Pain ; Cystadenocarcinoma ; Cystadenoma ; Cystadenoma, Mucinous ; Cystadenoma, Papillary ; Echinococcosis ; Female ; Humans ; Liver ; Magnetic Resonance Imaging ; Middle Aged ; Mucins ; Nausea ; Neuroendocrine Tumors

Adenocarcinoma, Clear Cell ; complications ; metabolism ; pathology ; surgery ; Adenoma ; pathology ; Adnexal Diseases ; pathology ; Adult ; Carcinoma, Renal Cell ; pathology ; secondary ; Cystadenoma, Papillary ; complications ; metabolism ; pathology ; surgery ; Diagnosis, Differential ; Fallopian Tube Neoplasms ; complications ; metabolism ; pathology ; surgery ; Female ; Follow-Up Studies ; Humans ; Keratin-7 ; metabolism ; Kidney Neoplasms ; pathology ; secondary ; Mucin-1 ; metabolism ; von Hippel-Lindau Disease ; complications ; metabolism ; pathology ; surgery

Primary broad ligament tumors are a rare entity, although secondary involvement of broad ligament by a malignancy arising elsewhrere in the abdomen/pelvis is common. Among the primary broad ligament tumors, leiomyoma is the most frequent histopathological type followed by serous papillary cystadenoma of borderline malignancy. Primary sarcomas and high-grade carcinomas have been extremely rarely reported. Because of the rarity of disease, its treatment policy, follow-up strategy and prognosis are yet to be established and it is managed as an ovarian malignancy. We had experienced a case of clear cell adenocarcinoma arising from broad ligament and report this case with a brief review of literature.
Adenocarcinoma, Clear Cell ; Broad Ligament ; Cystadenoma, Papillary ; Female ; Follow-Up Studies ; Leiomyoma ; Prognosis ; Sarcoma

OBJECTIVETo study the clinicopathologic and immunohistochemical features of cystic neoplasms of the pancreas.

METHODSNinety-two cases of cystic neoplasm of pancreas were retrieved from the Department archival file during the period from 1999 to 2005. Histologic features were studied and the tumors were typed according to WHO classification. Immunohistochemistry was also carried out using paraffin-embedded tissues.

RESULTSThe age of patients ranged from 16 to 80 years. The patients included 33 males and 59 females. The tumors varied from 2 cm to 21 cm in diameter. They consisted of intraductal papillary mucinous neoplasm (36/92), serous cystic neoplasm (18/92), solid pseudopapillary tumor (18/92), mucinous cystic neoplasm (14/92), cystic pancreatic ductal adenocarcinoma (4/92) and cystic pancreatic endocrine neoplasm (2/92). Immunohistochemical study revealed variable staining patterns, with frequent overlaps between different tumor types. In general, serous cystic neoplasm expressed MUC1, while mucinous cystic neoplasm was positive for MUC-5AC, intraductal papillary mucinous neoplasm for MUC-2 and cystic pancreatic ductal adenocarcinoma for MUC-1. On the other hand, solid pseudopapillary tumor expressed alpha-antitrypsin, alpha-antichymotrypsin, vimentin and progesterone receptor.

CONCLUSIONSAccurate diagnosis of pancreatic cystic neoplasms requires correlation of clinical findings, radiologic examination, histologic features and immunostaining results. Pathologic distinction is important because of different prognostic significance. Two-thirds of pancreatic cystic neoplasms are premalignant or malignant and warrant surgical resection, whereas the remaining one-third (including pseudocyst and serous cystadenoma) are benign and can be treated conservatively.

Adolescent ; Adult ; Aged ; Aged, 80 and over ; Carcinoma, Papillary ; metabolism ; pathology ; Cystadenocarcinoma, Mucinous ; metabolism ; pathology ; Cystadenocarcinoma, Serous ; metabolism ; pathology ; Cystadenoma, Mucinous ; metabolism ; pathology ; Cystadenoma, Serous ; metabolism ; pathology ; Diagnosis, Differential ; Female ; Humans ; Male ; Middle Aged ; Mucin 5AC ; metabolism ; Mucin-1 ; metabolism ; Neoplasms, Cystic, Mucinous, and Serous ; metabolism ; pathology ; Pancreatic Neoplasms ; metabolism ; pathology ; Young Adult