gestational trophoblastic neoplasia ( gtn) is one of the most common gynecologic tumors in our country. despite development of effective chemotherapy: some cases remain resistant and if there is only focus of tumor, resection would be indicated.we present a young woman with stage 1 persistant gtn showing no response to chemotherapy. transvaginal sonograpy revealed trophoblastic tissue in the ut...

Background: Malignant melanoma is the leading cause of death among skin cancers in western countries. However, the incidence, histologic subtypes, and tumor behaviors are quite different in Asians and western populations. Objective: This study was designed to survey the clinicopathological aspects of malignant melanoma among Khouzestan people. Patients and Methods: In a retrospective stud...

introduction : pulmonary adenosquamous carcinoma is an uncommon histological variety of bronchogenic carcinoma, and has histologic areas differentiated as both squamous cell carcinoma and adenocarcinoma and has clinical behavior more like that of adenocarcinoma. tumor stage is higher at the time of diagnosis, and survival is poorer. case presentation : we present a 65 years old woman with bulgi...

  Background and Objectives: Giant cell Tumor of bone (GCT) is often regarded as a benign tumor, but its clinical course is unpredictable, has a high rate of recurrence, and even can metastases and transform to a malignant tumor. Histological features of the tumor often could not predict its future biologic behavior, so it is just called ''Giant cell tumor'' without indicating maligna...

The relationship between immune complex (IC) formation and tumor cell metastatic potential was investigated in rats inoculated in the footpad with parental 13762 mammary adenocarcinoma cells or 6-thioguanine-resistant (TGR) variant cells. These cell lines are either highly metastatic (13762), nonmetastatic (TGR), or occasionally metastatic ( TGRrev , TGRrevM ). The 13762 TGR rat tumor model thu...

metastatic tumors account for 1% of all oral malignancies. metastasis to jaw bones is common, particularly in the mandible, rare in the oral soft tissues, and account for only 0.1% of oral malignancies. the majority of metastatic cases (70%) reported in the literature have primary tumors located in the lung, breast, kidney, and colon. metastasis is a biological complex process that involves det...

the most common metastatic sites for colorectal carcinomas include the liver, lungs, brain, bones and peritoneal surfaces. in this report, a case of sigmoid colon carcinoma presented with cervical lymphadenopathy was detected with the help of pet/ct. a 57 year-old male presented with a complaint of swelling on the left side of his neck. ultrasonographic examination of the neck revealed three hy...