2023 World Conference on Lung Cancer (Posters)-EP14.03. Anastomosing Hemangioma of Mediastinum and Pleura Mimicking Chest Malignancy

Pdf Summary

This presentation discusses a rare benign vascular tumor called anastomosing hemangioma, which is characterized by packed capillary channels with anastomosing sinusoidal patterns. The tumor is mostly found in deep or visceral sites of the body in adult patients and is usually asymptomatic. However, it can be incidentally detected on imaging, mimicking primary or secondary malignancies. The authors present a series of 6 cases of mediastinal and pleural anastomosing hemangioma that were initially suspected to be lung malignancies based on imaging findings.<br /><br />The study includes 3 men and 3 women ranging from 34 to 71 years of age. The patients presented with symptoms such as dyspnea, chest pain, pleural effusion, and a prior history of gynecologic malignancy. Imaging revealed mediastinal or pleural lesions, and two patients underwent F-18 FDG PET/CT imaging, which showed tumors with uptake intensity comparable to or slightly higher than the mediastinal blood pool. Based on these findings, a differential diagnosis of secondary metastasis, lymphoma, mesothelioma, thymic tumor, nerve sheath tumor, or angiosarcoma was considered.<br /><br />However, tissue sampling of all cases confirmed a diagnosis of benign anastomosing hemangioma. The authors emphasize the importance of histological confirmation for an accurate diagnosis. They also highlight that PET/CT imaging with low uptake intensity may indicate a benign process or low-grade malignancy.<br /><br />In conclusion, anastomosing hemangioma is a rare tumor that can occur in the thoracic region, mimicking primary or secondary chest malignancies. Accurate diagnosis requires histological examination. PET/CT imaging with low uptake may suggest a benign or low-grade malignant process. This research highlights the need for awareness and consideration of anastomosing hemangioma as a potential differential diagnosis in patients with suspicious thoracic lesions.

Asset Subtitle

Ba Nguyen

Meta Tag

Speaker Ba Nguyen

Topic Other Thoracic Malignancy

Keywords

anastomosing hemangioma

benign vascular tumor

capillary channels

sinusoidal patterns

deep sites

visceral sites

asymptomatic

imaging findings

differential diagnosis

histological confirmation