Lymphangiosarcoma arising in a congenitally lymphoedematous arm: case report

Area of Science:

• Oncology
• Vascular Biology
• Lymphedema Research

Background:

• Congenital lymphedema is a rare condition characterized by chronic swelling due to lymphatic system abnormalities.
• Malignant endothelial tumors are uncommon, with angiosarcoma being a notable type arising from blood or lymphatic vessels.
• The co-occurrence of congenital lymphedema and endothelial tumors is exceptionally rare, posing diagnostic and therapeutic challenges.

Purpose of the Study:

• To report a rare case of a malignant endothelial tumor arising in a congenitally lymphoedematous extremity.
• To discuss the clinical presentation, pathological findings, and treatment outcomes of this rare tumor.
• To contribute to the limited literature on endothelial tumors associated with congenital lymphedema.

Main Methods:

• Case report detailing clinical history, diagnostic imaging, surgical intervention, and autopsy findings.
• Histopathological examination of tumor tissue to confirm diagnosis and assess malignancy.
• Review of relevant literature on endothelial tumors and lymphedema.

Main Results:

• The tumor presented as multiple small nodules on the affected extremity.
• Despite midhumeral amputation, the patient developed widely scattered pulmonary metastases.
• Autopsy confirmed extensive metastatic disease 28 months after initial presentation.

Conclusions:

• Malignant endothelial tumors in the context of congenital lymphedema are rare and potentially aggressive.
• Early diagnosis and aggressive treatment may be necessary, but metastatic potential remains a significant concern.
• Further research is needed to understand the pathogenesis and optimal management of these rare tumors.