Epithelioid hemangioendothelioma of right innominate vein mimics a teratoma: A case report

[Epithelioid Hemangioendothelioma Presenting as a Right Paratracheal Mass: A Case Report]

Epithelioid hemangioendothelioma (EHE) is a low-grade malignant vascular neoplasm that can occur anywhere in the body. EHE has a low annual incidence (0.38/106) and prevalence (< 1/106), and primary mediastinal EHE is exceedingly rare. We report a case of EHE in a 53-year-old female which manifested as an incidentally discovered mass in the right paratracheal region. In this report, authors describe the pathological and radiological findings of primary mediastinal EHE invading the superior vena cava in the right paratracheal area.

Long-Term Observation and Treatment of Epithelioid Haemangioendothelioma of the Mediastinum: A Case Report

Epithelioid haemangioendothelioma is a rare angiogenic tumour originating from vascular endothelial or pre-endothelial cells, and it can occur anywhere in the body, such as the liver, lung, bone, spleen, lymph nodes, parotid gland, and thyroid. In the fifth revision of the WHO classification, epithelioid haemangioendothelioma (EHE) was described as a malignant vascular neoplasm composed of epithelioid endothelial cells, distinct from epithelioid angiosarcoma. We, herein, report one patient with EHE of the left upper mediastinum who underwent resection and radiotherapy during the first therapeutic process. Multiple metastases occurred in the thoracic vertebrae 6 years later, and resection and multiple radiotherapies were performed. The condition of the patient remained stable at the last review in October 2020, and it has been more than 8 years since her first admission. The reasonable “take-away” lessons from the case are active treatment and prolonged surveillance.

Superior vena cava replacement for epithelioid haemangioendothelioma

Epitheloid haemangiothelioma is extremely rare malignant tumour of vascular origin. Mediastinal location of this neoplasm with large veins involving is not common. We report a case of epitheloid haemangiothelioma in superior vena cava treated by radical resection and superior vena cava replacement with polytetrafluoroethylene prosthetic graft. There is a certain risk of neurological injury during the cross-clamping of superior vena cava in patient with incompletely obstructed veins. Venovenous shunt is a useful surgical strategy in this type of lesion without necessity of cardiopulmonary bypass use.

Clinico-radiological features and next generation sequencing of pulmonary epithelioid hemangioendothelioma: A case report and review of literature

Epithelioid hemangioendothelioma is a very rare, vascular, low‐grade malignant tumor found in the lungs, liver, bone, and other soft tissues. Most patients with pulmonary epithelioid hemangioendothelioma (PEH) are asymptomatic but usually present with multiple bilateral nodular lesions in the lungs. Currently, surgical lung biopsy, histology, and immunohistochemical methods are essential for diagnosis. However, there is no standard therapy for the treatment for PEH.

Our paper describes the clinico‐radiologic features and genomics of PEH based on next‐generation sequencing (NGS) in a 43‐year‐old male we encountered. The patient came to the hospital with right chest pain. After investigation, a lesion in the middle lobe of the right lung was found, together with smaller multiple lesions in both lungs. After resection of the lesion, histopathological analysis showed positive findings for PEH. The patient's blood and tumor tissue were sent for NGS analysis for further investigation. Results from the analysis revealed mutations of multiple genes. The information obtained from the genomic analysis of PEH using NGS may be significant for the planning and monitoring of treatment for this disease.