Wilms's tumor is a malignant renal parenchymal neoplasm. This tumor is most frequently discovered by palpable abdominal mass, while only total gross hematuria is not common in subjective symptom. We have experienced a four year-old girl complaining total gross hematuria and could not define preoperative diagnosis by clinical, radiological and laboratory findings. After operation, Wilms's tumor was confirmed on pathology.
Diagnosis ; Female ; Hematuria ; Humans ; Pathology ; Wilms Tumor*

Extrarenal Wilms' tumor is a very rare disease, and usually occurs in pediatric patients. We present a case of extrarenal retroperitoneal Wilms' tumor in a six-year old girl with a six-month history of a palpable left abdominal mass. The ultrasonographic and CT features of this tumor showed a well-defined, large, inhomogeneous, predominantly solid mass which was separate from the left kidney. Surgical pathology confirmed this to be an extrarenal Wilms' tumor.
Female ; Humans ; Kidney ; Pathology, Surgical ; Rare Diseases ; Wilms Tumor*

Female ; Humans ; Kidney Neoplasms ; complications ; pathology ; Ovarian Neoplasms ; pathology ; Wilms Tumor ; complications ; pathology ; Young Adult

Multilocular cystic nephroma is a rare disease, noninherited benign renal neoplasm occurring in both children and adults. It is necessary to make a differential diagnosis from all renal diseases with a cystic component, such as Wilms tumor, armatoma or polycystic dysplastic kidney in childhood. There are about only 200 case reports in the world since Walter Edmunds had described it first. We report a case of multilocular cystic nephroma presented with painless abdominal mass, treated with nephrectomy and confirmed with pathology.
Adult ; Child ; Diagnosis, Differential ; Humans ; Kidney ; Kidney Neoplasms ; Nephrectomy ; Pathology ; Rare Diseases ; Wilms Tumor

Child ; Child, Preschool ; Female ; Humans ; Kidney Neoplasms ; pathology ; Logistic Models ; Male ; Prognosis ; Retrospective Studies ; Wilms Tumor ; pathology

We present a case of retroperitoneal teratoma in a 4-year-old girl in which a Wilms' tumor-like element was predominant, unlike the usual pattern of the immature or malignant teratoma. Mature elements were composed of adipose tissue, neural plexus and ganglia, cartilage, smooth and skeletal muscles, and glandular epithelium of the respiratory and gastrointestinal types. Three months after complete excision of the mass, a recurrent tumor developed. It consisted of only nephroblastomatous elements without teratomatous components. Theories for the histogenesis of this rare tumor are discussed.
Child, Preschool ; Female ; Humans ; Kidney Neoplasms/*pathology ; Neoplasm Recurrence, Local/pathology ; Neoplasms, Multiple Primary/*pathology ; Retroperitoneal Neoplasms/*pathology ; Teratoma/*pathology ; Wilms Tumor/*pathology

A blastoma is a type of cancer, which is common in children; it is caused by malignancies derived from in the precursor cells, often called blasts. Examples are nephroblastomas, retinoblastomas, pleuropulmonary blastomas, and pancreatoblastomas. Pancreatoblastomas are extremely rarely in adults. It is difficult preoperatively to distinguish this tumor from other pancreatic tumors including solid and papillary epithelial neoplasm of the pancreas (SPEN), acinar cell carcinoma, islet cell tumor, and ductal adenocarcinoma with cystic degeneration. To our knowledge, this case may be the second report of a pancreatoblastoma occurring in an adult in Korea. We report a case of a pancreatoblastoma that was confirmed by pathology, despite the radiologic finding that assumed it was a SPEN.
Adenocarcinoma ; Adenoma, Islet Cell ; Adult* ; Carcinoma, Acinar Cell ; Child ; Humans ; Korea ; Neoplasms, Glandular and Epithelial ; Pancreas ; Pathology ; Retinoblastoma ; Wilms Tumor

Pediatric solid tumors have many similarity among different tumors. These tumors present small round cell types, and cause frequent diagnostic problems in pediatric pathology. An important advance in the investigation of these small round cell tumors has been the identification of consistent chromosomal translocations associated with several types of tumor. Eighteen patients with soft tissue sarcoma were available for review. Seventeen cell lines were also included in this study. The RNA from the specimens were analyzed by reverse transcriptase-polymerase chain reaction (RT-PCR). PAX3-FKHR fusion was present in four of five alveolar rhabdomyosarcoma and PAX7-FKHR fusion was detected in one of five alveolar rhabdomyosarcoma. None of the specimens expressed more than one chimeric transcript. EWS-FLI1 or EWS-ERG fusions were detected in all seven Ewings' sarcoma. No specimens showed EWS-WT1 fusion. These results corresponded well to the histopathologic diagnosis. There were no differences in the histologic appearances of tumors with the more frequent PAX3-FKHR or EWS-FLI1 fusions compared with those containing the variant PAX7-FKHR or EWS-ERG fusions. RT-PCR assay for chimeric transcript is an useful tool for a rapid and objective diagnosis of pediatric solid tumors. Through these tools, we can approach genetically to the differential diagnosis of undifferentiated small round tumors.
Cell Line ; Diagnosis* ; Diagnosis, Differential ; Humans ; Lymphoma ; Pathology ; Rhabdomyosarcoma ; Rhabdomyosarcoma, Alveolar ; RNA ; Sarcoma ; Sarcoma, Ewing ; Translocation, Genetic ; Wilms Tumor

Child ; Humans ; Kidney Neoplasms ; complications ; surgery ; Male ; Thrombectomy ; methods ; Vena Cava Filters ; Vena Cava, Inferior ; pathology ; Wilms Tumor ; complications ; surgery

Child ; Humans ; Case-Control Studies ; East Asian People ; Genetic Predisposition to Disease/genetics* ; Methyltransferases/genetics* ; Polymorphism, Genetic ; Wilms Tumor/pathology*