Mucinous neoplasms of the appendix are a heterogeneous group of neoplasms ranging from simple mucoceles to complex pseudomyxoma peritonei. Considerable controversy exists on their pathologic classification and nomenclature. Clear understanding of the histopathologic diversity of these neoplasms helps in establishing proper communication between the radiologist, the pathologist and the surgeon. ...

Mixed testicular tumors are of great interest both clinically and pathologically. Being in most cases benign neoplasms, they sometimes give rise to metastases, some subjected malignant transformation, so that their timely recognition is particular value. In the pathological anatomical sense these neoplasms relation microscopic structure, often extremely complex histogenesis.

Synchronous cancer is referred to two or more histological distinct malignancies diagnosed during the same hospital admission. Globally more than 1 million people get colorectal cancer yearly resulting in about 0.5 million deaths. Vulvar cancer is the fourth most common gynecologic cancer (following the corpus uterine cancer, cancer of ovary and cervix) and comprises only 4 percent of malignanc...

Ovarian cancer is the most lethal gynecologic malignancy. The surface epithelial tumor is the most common type of ovarian cancer. Among these, the mucinous tumors account for 10-15% of ovarian tumors. Mucinous ovarian tumors are among the most difficult ovarian neoplasms for surgical pathologists to interpret. Mucinous tumors sometimes coexist with other surface epithelial tumors. Therefore, ma...

Thymomas and thymic carcinomas are rare mediastinal neoplasms arising from epithelial cells, the presence of synchronous or metachronous primary in a single patient is an extremely event. Thymoma patients appear to have inherent predisposition toward developing additional neoplasms. This additionally presents diagnostic challenge, revealing importance multidisciplinary expertise management thes...

The discovery that certain tumors may be in duced in certain species by viruses led to attempts to transmit mammalian tumors by injection of cell-free preparations. Taylor and co-workers (7, 8) claimed success with such material, but others failed to corroborate their findings (†̃2, 9). We are aware of no previous report of transmission of a mammalian neoplasm by injection of isolated cytoplas...