No abstract available.
Cystadenocarcinoma*

No abstract available.
Cystadenocarcinoma, Mucinous* ; Mucins*

No abstract available.
Cystadenocarcinoma, Mucinous* ; Humans* ; Mucins*

Billiary cystadenoma and cystadenocarcinoma are rare neoplasms of the biliary ductal system. The authorspresent 2 cases of biliary cystadenoma and 3 cases of cystadenocarcinoma. The typical sonographic apearance ofthese tumors is a large intrahepatic gloular or ovoid thickwalled cystic mass which often containes multipleseptations with papillary growth and solid portion. Low-level internal echoes may be seen within the cystic mass.The characteristic CT findings of these tumors are multiloculated cystic mass, thick sepatations with papillaryprojection sand solid portion within the cystic mass. Angiographical characteristics of these tumors arehypovascular mass with frequent abnormal clusters of tumor vessels within the walls on arterial phase andaccumulation of contrast material along the wall or internal septation on delayed film.
Angiography ; Cystadenocarcinoma ; Cystadenoma ; Ultrasonography

This is a case of a 54-year-old, perimenopausal, Asian, woman, who presented with an enlarging left breast mass associated with whitish to bloody nipple discharge. A core needle biopsy, done in another institution, showed histologic findings of a mucinous carcinoma with triple negative “basal-like” biomarker status (ER, PR, HER2/neu). Six cycles of neoadjuvant chemotherapy were given after which the subsequent modified radical mastectomy revealed a centrally located, 10.0 cm, well-circumscribed, nodular, ovoid mass on gross examination. Microscopic findings showed tall columnar cells in stratification, tufts and papillary formations, with surrounding abundant extracellular mucin. The individual tumor cells exhibit enlarged, hyperchromatic, basally located nuclei with prominent nucleoli, abundant amphophilic and occasionally oncocytic cytoplasm which contains intracytoplasmic mucin. Based on the histologic features, “basal-like” biomarker expression, and additional immunohistochemical studies (positive CK7, negative CK20 and CDX2), this case demonstrates a pure mucinous cystadenocarcinoma of the breast. In addition to the rare histologic type, this case is exceptional since, despite multiple cycles of neoadjuvant chemotherapy, presence of extensive lymphovascular invasion and axillary lymph node involvement with extranodal extension remain evident.
Cystadenocarcinoma, Mucinous ; Breast Neoplasms

Parovarian tumors may be of mesothelial, mesonephric (Wolffian), or paramesonephric (Mullerian) origin. An estimated 10% of adnexal masses are parovarian cysts, most commonly mesothelial or paramesonephric in origin. Benign neoplasms such as cystadenomas may occasionally develop in parovarian cysts. Malignancy has been reported in 2.0% to 2.8% of parovarian cystic masses, but it seems to be even less frequent in masses smaller than 5 cm. The histologic appearance of the tumor is identical with that of tumors of ovarian origin. However, their similarity of biologic behavior is uncertain. The appropriate therapy for this unusual lesion has not been fully defined, since a minimal amount of follow-up data is available on the few cases which have been reported. We had experienced a case of papillary serous cystadenocarcinoma of borderline malignancy arising from a parovarian paramesonephric cyst and report this case with a brief review of literature.
Cystadenocarcinoma* ; Cystadenocarcinoma, Serous ; Cystadenoma ; Female ; Follow-Up Studies ; Parovarian Cyst

Humans ; Breast/pathology* ; Cystadenocarcinoma/pathology* ; Cystadenocarcinoma, Mucinous/pathology* ; Female

No abstract available.
Cystadenocarcinoma, Mucinous* ; Female* ; Humans ; Mucins*

No abstract available.
Adenocarcinoma ; Cervix Uteri* ; Cystadenocarcinoma, Mucinous ; Female

Papillarrenal cell carcinoma is a histological variant that may be cystic in appearance. This variety has been termed cystadenocarcinoma to distinguish it from a renal cell carcinoma that has been rendered cystic through necrosis and hemorrhage. Herein we report a case of cystadenocarcinoma of the kidney, which was positive in cytology and confirmed by surgical exploration.
Carcinoma, Renal Cell ; Cystadenocarcinoma* ; Hemorrhage ; Kidney* ; Necrosis