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Primary localized amyloidosis manifested as supraclavicular and mediastinal lymphadenopathy

Departments of ¹ Radiology and ² Pathology, College of Medicine, Korea University, Korea University Guro Hospital, 97 Guro-dong, Guro-gu, Seoul, 152-703, Korea

Correspondence: Eun-Young Kang, Department of Radiology, Korea University Guro Hospital, 97 Guro-dong, Guro-gu, Seoul 152-703, Korea. E-mail: keyrad{at}korea.ac.kr

Thoracic involvement of amyloidosis is relatively rare, but mediastinal lymphadenopathy in the absence of pulmonary parenchymal involvement is extremely rare. The case presented here is of a previously healthy elderly woman who developed a palpable mass in the right supraclavicular area. The chest CT scan showed extensive, contiguous and homogeneous low attenuated lymphadenopathy with stippled calcification in the right supraclavicular area and mediastinum. Amyloidosis was confirmed histopathologically on a biopsy specimen from a right supraclavicular lymph node. Because there were no other sites found to be affected by amyloidosis and there was no underlying chronic disease, we made a final diagnosis of primary localized amyloidosis involving only the supraclavicular and mediastinal lymph nodes.