Track topics on Twitter Track topics that are important to you
Angiosarcoma is a rare malignant neoplasm of the liver. The various morphologic patterns seen with angiosarcomas of the liver have not been systematically studied and their recognition remains a major diagnostic challenge. In order to provide more comprehensive data on the morphologic patterns, angiosarcomas that had been diagnosed between 1996 and 2016 at a large medical referral center were reviewed. The major growth patterns were classified as sinusoidal (non-mass forming) versus mass forming. The mass-forming cases were further subdivided into epithelioid, spindled, or vasoformative. The study identified 21 patients with primary hepatic angiosarcoma: 13 men and 8 women. The ages ranged from 26 to 89 years. Seventeen angiosarcomas were mass-forming tumors, of which 9 showed predominantly vasoformative growth. Most of these vasoformative cases (6/9) were composed of small vessels, 2 cases had slit-like vascular spaces, and one case showed a mixture of small and large vessels. There were 7 mass-forming angiosarcomas without vasoformation: 3 had an epithelioid morphology and 4 were composed primarily of spindled cells. The final mass-forming tumor showed a mixture of vasoformative and nonvasoformative areas. Four of 21 cases were non-mass forming and showed either diffuse sinusoidal infiltration (N=2) or prominent peliotic changes (N=2). Finally, 3 uncommon patterns were identified. One case showed nodules of spindle cells arranged in prominent whorls in a background of loose connective tissue with abundant inflammation. A second case arose in the setting of the Blue Rubber Bleb Nevus Syndrome and showed numerous tumor nodules with an architectural pattern that resembled infantile hemangioma, some with areas of atypia consistent with malignant transformation to angiosarcoma. The third unusual pattern showed multiple nodules of thin walled large caliber vascular proliferations, some of which showed atypia that reached the level of angiosarcoma. The results from this study indicate that the majority of hepatic angiosarcomas are mass forming (two third of cases), a pattern that is recognizable on H&E when vasoformative, but can mimic carcinoma or undifferentatied sarcomas when nonvasoformative (one third of cases). The sinusoidal patterns are particularly challenging and are frequently missed on initial review. Finally, we describe several unsual patterns of angiosarcoma. Awareness of these classic and rare morphologic patterns can help make the diagnosis of angiosarcoma.
This article was published in the following journal.
Name: The American journal of surgical pathology
Thyroid tumors with follicular architecture encompass a considerable array of distinct entities. These lesions share significant morphologic overlap, but portend different prognostic and therapeutic i...
The objective of our study was to investigate whether phosphatase and tensin homolog (PTEN) expression is associated with clinicopathologic features and multiparametric MRI findings in prostate cancer...
Adenomyomatous polyps (APs) of the uterus (also termed polypoid adenomyomas and pedunculated adenomyomas) are exophytic proliferations composed of myomatous stroma admixed with endometrial glands. APs...
Although intracholecystic papillary neoplasms (ICPNs) have been increasingly recognized, their features remain unclear because of the lack of standardized definition. This study aimed to elucidate cli...
Pleomorphic liposarcoma is the least common but most aggressive subtype of liposarcoma. Tumors most commonly arise in the deep soft tissues of the extremities in adult patients. Pleomorphic liposarcom...
Laboratory change induced by common bile duct (CBD) stone is in general observed as the higher elevation of alkaline phosphatase (ALP) and gamma-glutamyl transpeptideas (ɤ-GT), in compari...
This study is to elucidate the morphologic evolution and remodeling of ICAD under stringent control of cardiovascular risk factors.
INTERLIVER is a prospective observational study of the relationship of the molecular phenotype of 300 liver transplant biopsies to the histologic phenotype and the clinical features and ou...
Liver transplantation (LT) is one of the curative treatment options for patients with HCC associated to chronic liver disease (cirrhosis). All current international guidelines recommend LT...
Purpose: L-[3-18F]-α-methyltyrosine (18F-FMT) is an amino-acid tracer for PET. We have conducted a clinicopathologic study to elucidate the correlation of angiogenesis with 18F-FMT and 1...
Adverse cutaneous reactions caused by ingestion, parenteral use, or local application of a drug. These may assume various morphologic patterns and produce various types of lesions.
A group of dermatoses with distinct morphologic features. The primary lesion is most commonly a papule, usually erythematous, with a variable degree of scaling on the surface. Plaques form through the coalescing of primary lesions.
Wide continuum of associated cognitive and neurobehavioral disorders, including, but not limited to, three core-defining features: impairments in socialization, impairments in verbal and nonverbal communication, and restricted and repetitive patterns of behaviors. (from DSM-V)
Sudden liver failure in the presence of underlying compensated chronic LIVER DISEASE (e.g., LIVER CIRRHOSIS; HEPATITIS; and liver injury and failure) due to a precipitating acute hepatic insult.
Patterns of practice in nursing related to provision of services including diagnosis and treatment.
Hepatology is the study of liver, gallbladder, biliary tree, and pancreas, and diseases associated with them. This includes viral hepatitis, alcohol damage, cirrhosis and cancer. As modern lifestyles change, with alcoholism and cancer becoming more promi...
Women's Health - key topics include breast cancer, pregnancy, menopause, stroke Follow and track Women's Health News on BioPortfolio: Women's Health News RSS Women'...
Vascular relates to blood vessels (Oxford Medical Dictionary) and can be used to describe the supply of blood, a disease affecting the blood vessels or molecules associated with these structures. For example, <!--LGfEGNT2Lhm-->atherosclerosis ...