► Synchronous mucinous metaplasia and neoplasia of the female genital tract (SMMN-FGT) is a rare mucinous lesion. ► This is the first case of SMMN-FGT with DNA sequencing of STK11 and KRAS, but no mutation was identified.

•We report a case of an ovarian mucinous cystadenoma that exhibited extensive sex-cord differentiation.•The ovarian tumor coincided with a uterine endometrial carcinoma.•The immunohistochemical pattern of mucinous epithelium of the ovarian tumor was suggestive of lower gastrointestinal origin.

Urothelial carcinoma with abundant myxoid stroma is a newly-described and extremely rare entity. Since only very few cases have been reported, there is no consensus on its nomenclature. Microscopic examination revealed invasive urothelial carcinoma with widespread low-grade noninvasive areas. There were focal invasive areas in the neighborhood of the renal parenchyma. Malignant urothelial tumor...

BACKGROUND Mucinous cystic neoplasm (MCN) of the pancreas is basically cystic epithelial neoplasm, unilocular or multilocular, occurring almost exclusively in women. CASE PRESENTATION A 51-year-old female presented with a pancreatic mass incidentally found on the abdominal computed tomography. She underwent distal pancreatectomy. The sectioned surface of the pancreas revealed a circumscribed,...

An immunohistological method (Shintaku-Said method) for the demonstration of oestrogen receptors in routinely processed paraffin wax embedded tissue was applied to 19 cases of mucinous carcinoma of the breast. Seventeen (89%) tumours showed variable degrees of positivity and two were negative. In eight cases the receptors were also assayed biochemically using a dextran-coated charcoal method, a...

Bronchioloalveolar carcinoma (BAC), a rare form of lung malignancy, is usually seen in non-smokers and women. Three distinct histological forms have been identified viz, mucinous, non-mucinous and mixed or indeterminate. The mucinous variety of BAC may present as a consolidation which is very difficult to differentiate from an infective pneumonia. We present a case of a middle aged female who w...

Among 31 benign cystic neoplasms of the pancreas diagnosed as mucinous cystadenomas, we identified 9 (29%) cases of nonmucinous cystadenomas with a pancreatobiliary phenotype and an ovarian-like stroma. Although both cystic tumors belong to the same family, they should be separated because their epithelial lining and cyst fluid are different. The lining cells of the nonmucinous cystadenomas con...

Pseudomyxoma peritonei (PMP) and extragastrointestinal stromal tumors (E-GISTs) are both rare entities. Most of the time, PMP is associated with an appendiceal tumor. An ovarian mucinous tumor can mimic appendiceal metastases. E-GIST is a mesenchymal tumor that can arise from the omentum, retroperitoneum, mesentery, or pleura. We present a case of an 87-year-old woman with mucinous carcinomatos...

PURPOSE The survival of patients with local-regional adenocarcinoma of the esophagus or esophagogastric junction (EGJ) treated with preoperative chemoradiation is much better in patients with pathologic complete response than those with residual tumor. Some adenocarcinomas have mixed patterns, including signet-ring cell and mucinous histology, but the clinical significance of these subtypes is ...

INTRODUCTION Invasive mucinous adenocarcinoma is a unique histologic subtype of lung cancer, and our knowledge of its genetic and clinical characteristics is rapidly evolving. Here, we present next- generation sequencing analysis of nucleotide variant and fusion events along with clinical follow-up in a series of lung mucinous adenocarcinoma. METHODS We collected 72 mucinous adenocarcinomas f...