8 documents found, page 1 of 1

Embryonal Sarcoma of the Liver in the Adult: Challenges in the Diagnosis of a R...

Abstract Introduction: Embryonal sarcoma of the liver (ESL) is a rare neoplasm of the liver occurring mainly in paediatric ages. Making the correct diagnosis can be challenging as the laboratory and radiological findings that are often nonspecific, and the tumour immunophenotype is poorly defined and even somewhat variable. Case Presentation: A large epigastric mass was detected in a computerized tomography sca...

“Hepatologia em Rede”: A Portuguese Association for the Study of the Liver (APE...

Multiple Myeloma Involvement of the Pancreas: A Case Report of Pancreatic Extra...

Abstract Extramedullary plasmacytomas are rare tumors that can occur either as primary lesions or as a manifestation of multiple myeloma. Pancreatic involvement by plasma cell myeloma is very rare, accounting for less than 0.1% of pancreatic masses. Radiological findings are not specific. The most typical finding of pancreatic plasmacytoma on computed tomography has been reported as the presence of a focal mult...

Hepatic Adenomatosis: A Challenging Liver Disease

Hepatic adenomatosis is defined as the presence of 10 or more adenomas in an otherwise normal liver. Half of the cases are clinically silent and detected incidentally in imaging exams. A 42-year-old woman with previous history of arterial hypertension and mixed dyslipidemia had multiple liver nodules incidentally identified in an abdominal computed tomography scan. She was asymptomatic and her physical examinat...

Hepatic Myxoid Leiomyoma: A Very Rare Tumor

Introduction: Mesenchymal tumors of the liver are rare, and in this group, myxoid leiomyomas are even rarer. So far, only 2 cases have been reported in the literature. Case Presentation: We aim to report the case of a 16-year-old female with a large lesion on the right hepatic lobe, grossly composed of gelatinous and heterogeneous tissue. Discussion: Histological evaluation revealed a benign mesenchymal neoplas...

Neuroendocrine Carcinoma and Intracystic Papillary Neoplasm: A Rare Association...

Neuroendocrine carcinoma of the gallbladder is a very rare neoplasia comprising only 0.2% of all the gastrointestinal neuroendocrine tumors. We present the case of an 85-yearold male with nonspecific gastrointestinal symptoms, progressive weight loss, and deterioration in the preceding 15 days. Imaging study showed a 5-cm polypoid mass localized at the gallbladder fundus, leading to a radical cholecystectomy. P...

Cystic nephroma and DICER1 mutations: report of a hitherto unreported mutation

ABSTRACT Paediatric cystic nephroma is a neoplasm of uncertain pathogenesis characterized by a multilocular architecture that develops in children. Some cases may be sporadic, and others may present a familial association, together with other neoplasms, as part of a DICER1 syndrome. We present a case of a paediatric cystic nephroma with an unreported DICER1 mutation and explore the differential diagnosis mainly...

Inflammatory myofibroblastic tumour arising incidentally as a polypoid lesion i...

ABSTRACT Inflammatory myofibroblastic tumour (IMT) is a rare mesenchymal neoplasm that usually originates from abdominal soft tissues. A female patient aged 50 years presented with a 1.2 cm gallbladder polyp. The microscopic study showed spindle cell proliferation in an edematous background rich in lymphocytes and plasma cells. Immunohistochemistry showed positivity for vimentin, smooth muscle actin, and anapla...