Multiple Pulmonary Cavernous Hemangioma: A Case Report

Pulmonary cavernous hemangioma (PCH) is extremely rare and, due to the lack of specific radiological characteristics, is often misdiagnosed as other pulmonary diseases, including metastatic tumors. Here, we report a case of multiple PCH lesions with concomitant hepatic cavernous hemangioma (HCH), emphasizing the diagnostic implications of imaging findings.

A 57-year-old man presented with fever. CT revealed numerous well-circumscribed pulmonary nodules and multiple low-density hepatic lesions. Dynamic contrast-enhanced CT demonstrated mild, nonspecific enhancement of the pulmonary nodules, whereas the hepatic lesions showed enhancement from the center to the periphery. Serum tumor markers were within normal limits, and PET-CT revealed no abnormal fluorodeoxyglucose uptake in any of the lesions. Although the hepatic lesions appeared suggestive of hemangioma on imaging, the possibility of malignancy, such as hepatic angiosarcoma and its pulmonary metastases, could not be completely ruled out. Therefore, both hepatic and pulmonary biopsies were performed, and histopathological examination confirmed cavernous hemangioma in both organs.

PCH is a rare benign tumor lacking distinctive imaging characteristics; therefore, differentiation from metastatic pulmonary tumors is often challenging and represents a key diagnostic issue. Although definitive diagnosis currently relies on surgical biopsy, combining suggestive imaging findings-such as the presence of microcalcifications within nodules and the absence of fluorodeoxyglucose uptake on PET-CT-may help avoid unnecessary invasive procedures.