BACKGROUND We performed a retrospective study to determine the cancer-specific survival of colorectal cancer patients with a component of signet-ring cells or mucin comprising < 50% of the tumor mass. METHODS A total of 2454 patients seen in our hospital from 1985 to 2011 were retrospectively studied. The patients were divided into five groups according to type of cancer: signet-ring cell car...

Sarcoma-like mural nodule is a very rare occurrence in a mucinous tumour of the ovary. Two such nodules having morphologically benign features with osteoclastic giant cells, in the wall of mucinous cystadenoma are described. In addition, these nodules exhibited reactive vascular proliferations. The sarcoma-like nodules are associated with a favourable outcome and must be distinguished from othe...

BACKGROUND Cytoplasmic eosinophilia in breast tumors is due mainly to abundance of secretory granules, lysosomes and/or mitochondria. Diffuse cytoplasmic hyalinization caused by intermediate filaments has not been described before. CASES Two cases of pure mammary mucinous carcinoma occurred with marked cytoplasmic hyalinization among 556 wide excision/mastectomy specimens of mammary ductal ca...

Retroperitoneal teratoma with malignant transformation is a rare condition in adults. Its most common malignant transformation is into a squamous cell carcinoma, but rarely into a mucinous adenocarcinoma. Postoperative treatment of mucinous adenocarcinoma arising from teratomas has not been established due to its rare incidence. Here we present a case of retroperitoneal mucinous adenocarcinoma ...

Mucinous tumors of the pancreas are rare and the diagnosis of invasive carcinoma can be a dilemma. While metastatic disease from mucinous cystadenocarcinoma (MCAC) and invasive intraductal papillary mucinous neoplasms (IPMN) have been reported, no extraperitoneal mucinous cystic metastatic disease has been described. When metastatic, the overall survival rates for invasive adenocarcinoma, mucin...

Cystic breast mass is one of the common conditions seen presented in any breast clinic. Evaluating such cystic breast lesions is very important. Malignant cystic tumors like mucinous carcinomas and papillary carcinomas have to be differentiated from common benign cystic lesions of the breast like fibrocystic lesions and papillomas. Malignant breast cancers that present as cystic lesions are see...

HISTOLOGICAL TUMOUR TYPE (Note 7) Hepatocellular carcinoma Hepatocellular carcinoma, fibrolamellar variant Cholangiocarcinoma Combined hepatocellular – cholangiocarcinoma Intraductal papillary neoplasm with an associated invasive carcinoma Mucinous cystic neoplasm with an associated invasive carcinoma Undifferentiated carcinoma Carcinoma, type cannot be determined mm Intrahepatic Cholangiocar...

This article describes the features on sonography, computed tomography (CT) and magnetic resonance imaging (MRI) of mucinous tubular and spindle cell carcinoma of the kidney. Six pathologically proven cases of mucinous tubular and spindle cell carcinoma of the kidney were identified (5 females, 1 male); all patients underwent preoperative imaging. The mean age of the patients was 58.5 years. Th...

Various mucin-producing neoplasms originate in different abdominal and pelvic organs. Mucinous neoplasms differ from non-mucinous neoplasms because of the differences in clinical outcome and imaging appearance. Mucinous carcinoma, in which at least 50% of the tumor is composed of large pools of extracellular mucin and columns of malignant cells, is associated with a worse prognosis. Signet ring...

Mucinous tumours involving the ovary may be benign, borderline, or malignant. Malignant tumours may be primary or metastatic. Differentiation between primary and metastatic involvement of the ovary is critical for optimal patient management. Even among skilled pathologists, this distinction can be problematic, as can the distinction between borderline ovarian tumour of intestinal type and well-...