Multiple Disseminated Sclerosing Hemangiomas of the Lungs

Sclerosing hemangioma (SH) is a relatively rare, benign neoplasm of the lung. The characteristic features of SH include asymptomatic, peripheral, solitary, well-circumscribed nodules in women aged around 40 years. The pattern of multiple nodules is rare, with an incidence of 4-5% in pulmonary SH. We present the case of a 44-year-old asymptomatic woman who had undergone chest roentgenography that revealed numerous small nodular opacities with slight thickening along the interstitial lines in both the lungs during a regular examination; her chest computed tomography scan revealed innumerable diffuse nodules that mimicked disseminated malignant lesions in all lobes of both the lungs. In this case,s in which no primary lesion was detected, we performed wedge resection of the right upper lobe to establish a definitive diagnosis; histological analysis of the resected tissue confirmed SH. Follow-up data of 4 years suggested that SH in this case wasis indolent without treatment. A review of previously reported cases with multiple nodules suggested that fewerless than 3 nodules of around 1 cm to 3 cm were observed in a limited number of lobes. However, we report, for the first time, a case with innumerable diffuse nodules less than 1 cm in diameter, spreading in all lobes of both the lungs. Although the incidence of multiple SH is very low, itthese should be considered when evaluating any patient with multiple diffuse miliary-like nodules. HoweverFurther, these findings do not indicate an unfavorable outcome.