Journal of Pathology and Translational Medicine

Case Reports

Angiomyomatous Hamartoma of Popliteal Lymph Nodes Occurring in Association with Diffuse Pigmented Villonodular Synovitis of Knee.: Hyun Soo Kim, Ki Yong Na, Jae Hoon Lee, Nam Su Cho, Gou Young Kim, Sung Jig Lim; Korean J Pathol. 2011;45:S58-S61.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.S1.S58

Abstract PDF: We report the first case of an angiomyomatous hamartoma (AH) of the popliteal lymph nodes (LNs) occurring in association with diffuse pigmented villonodular synovitis (PVNS) of the knee. AH is a rare benign vascular disease with a predisposition for the LNs of the inguinal region. Twenty-five cases of AH have been reported to date; however, the precise pathogenesis is still undetermined. In the present case, an open synovectomy revealed two of three popliteal LNs in close proximity to the extra-articular component of diffuse PVNS. These LNs demonstrated irregularly distributed thick-walled blood vessels in the hilum. These vessels extended into the medulla and cortex and were associated with haphazardly arranged smooth muscle cells in the sclerotic stroma. These findings are compatible with an AH. Our observations raise the possibility that AH of the popliteal LNs may represent an abnormal proliferative reaction against the inflammatory process caused by PVNS of the knee.

Cystic Adventitial Disease of the Popliteal Artery: A case report.: Soo Min Kang, Kyeong Cheon Jung, Je G Chi; Korean J Pathol. 1993;27(4):418-420.

Abstract PDF: Localized cystic degeneration of peripheral arteries represents and unusual cause of arterial insufficiency. It frequently occurs in patient without generalized arteriosclerosis. It has been reported in patients from age 11 to 62 years. Cystic adventitial disease is most common in the popliteal artery. At least 115 cases have been reported worldwide, but none in Korea. We report a case of cystic adventitial disease involving the left popliteal artery. This 64-year-old man presented with an 18-month history of cramping pain of sudden onset in the left calf and claudication. Angiographic findings showed a 6 cm length of luminal obliteration of the popliteal artery. Segmentally resected popliteal artery showed two longitudinally directed cystic masses measuring 3.5x1.5 cm and 2.5x1.5 cm in the adventitia. Microscopic examination revealed cystic space in the arterial adventitia compressing arterial lumen. There were a number of foamy histiocytes collected along the cystic lumen.

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