A 60-year-old man presented with persistent dysphagia and weight loss of 2-months duration. An upper GI endoscopy revealed mycotic oesophagitis and chronic gastritis with two ulcers of the gastric body and antrum. Repeat endoscopy was performed after medical treatment failed, and histological examination on new biopsy samples led to a diagnosis of Kaposi sarcoma of the stomach. HIV infection was not known at this time; however, the patient was tested after the diagnosis of Kaposi sarcoma was made and found to be HIV positive. An adequate biopsy sampling was required for histological diagnosis and the use of immunohistochemical markers, especially human herpesvirus 8 (HHV8) antibodies, supplied valid diagnostic support. This case underlines the importance of an accurate evaluation of vascular proliferation in gastrointestinal biopsies even in patients without clinical evidence of HIV-related pathology.
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http://dx.doi.org/10.1136/bcr.03.2009.1666 | DOI Listing |
Ear Nose Throat J
January 2025
Department of Otolaryngology-Head & Neck Surgery, Lehigh Valley Health Network, Allentown, PA, USA.
Kaposi's sarcoma (KS) is a tumor involving blood vessels and lymphatic tissue. It is caused by human herpes virus-8, typically in HIV infection in individuals with AIDS. There are 4 major types of KS including classic, endemic, immunosuppression, and AIDS-related.
View Article and Find Full Text PDFIran Biomed J
December 2024
Department of Medical Laboratory Sciences, School of Allied Medical Sciences, Tehran University of Medical Sciences, Tehran, Iran.
Neoreviews
January 2025
Vascular Anomalies Center, Division of Pediatric Surgery, Children's Hospital Colorado, Aurora, Colorado.
Vascular anomalies are broadly classified into 2 categories: vascular tumors and vascular malformations. Vascular anomalies frequently present as cutaneous lesions in infants. This review summarizes vascular anomalies that most commonly present as dermatologic lesions in the neonatal period, with a focus on the clinical findings, pathophysiology and histology, relevant radiographic findings, and management of common vascular anomalies such as infantile hemangiomas, congenital hemangiomas, and Kaposiform hemangioendothelioma, along with vascular malformations, including capillary, lymphatic, venous, and arteriovenous malformations.
View Article and Find Full Text PDFJ Med Virol
January 2025
Microbiology Department, University of Massachusetts, Amherst, Massachusetts, USA.
Kaposi's sarcoma-associated herpesvirus is an oncogenic gammaherpesvirus that plays a major role in several human malignancies, including Kaposi's sarcoma, primary effusion lymphoma, and multicentric Castleman's disease. The complexity of KSHV biology is reflected in the sophisticated regulation of its biphasic life cycle, consisting of a quiescent latent phase and virion-producing lytic replication. KSHV expresses coding and noncoding RNAs, including microRNAs and long noncoding RNAs, which play crucial roles in modulating viral gene expression, immune evasion, and intercellular communication.
View Article and Find Full Text PDFJ Med Virol
January 2025
Department of Pathology, Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA.
An outbreak of the novel coronavirus SARS-CoV-2, the causative agent of COVID-19 pandemic, has resulted in over 7 million confirmed deaths. In addition to severe respiratory and systematic symptoms, several comorbidities increase the risk of fatal outcomes. Therefore, it is essential to investigate the impact of COVID-19 on pre-existing conditions in patients, such as cancer and other infectious diseases.
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