Lipoma Arborescens in the Hip Joint - A Case Report -

Jai-Hyung Park; Hyung-Soo Kim; Soo-Tae Chung; Jeong-Hyun Yoo; Joo-Hak Kim; Seung-Do Cha; Jin-Ha Jung

doi:10.5371/jkhs.2011.23.1.83

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Park, Kim, Chung, Yoo, Kim, Cha, and Jung: Lipoma Arborescens in the Hip Joint - A Case Report -

Case Report

The Journal of the Korean Hip Society

The Journal of the Korean Hip Society 2011; 23(1): 83-87.

Published online: 31 March 2011

DOI: https://doi.org/10.5371/jkhs.2011.23.1.83

Lipoma Arborescens in the Hip Joint - A Case Report -

Jai-Hyung Park, MD, Hyung-Soo Kim, MD, Soo-Tae Chung, MD, Jeong-Hyun Yoo, MD, Joo-Hak Kim, MD, Seung-Do Cha, MD, Jin-Ha Jung, MD

Department of Orthopaedic Surgery, Myongji Hospital, College of Medicine, Kwandong University, Goyang, Korea.

Address reprint request to Jai-Hyung Park, MD. Department of Orthopedic Surgery, Myongji Hospital, College of Medicine, Kwandong University, 697-24 Hwajung-dong, Deokyanggu, Goyang 412-270, Korea. TEL: +82-31-810-5520, FAX: +82-31-810-6537, wonnypia@hanmail.net

Received 19 September 2010 Revised 29 November 2010 Accepted 3 December 2010

Abstract

Lipoma arborescens is a very rare disease in which adipocytes form a synovial villous lipoma. In addition, it has the potential for dysplastic proliferation. Hypertrophic synovial lipoma is stimulated by movement of joints, which results in joint pain, effusion, limitation of joint movement and swelling. A definite cause has not yet been proven, but trauma, rheumatic arthritis, inflammation and degenerative change are believed to be possible causes. There have been reports of lipoma arborescens in several joints, including the knee joint and elbow joint. However, it is very rare to find this disease in hip joints. In fact, only one such case has been reported in Korea. We report here on a rare case of lipoma arborescens in the hip joint along with a review of the relevant literature.

Keywords: Lipoma arborescens, Lipoma

Figures and Tables

Fig. 1

(A, B) Anteroposterior & axial Hip radiograph shows soft tissue density and bony erosion of the right femoral head.

Fig. 2

(A, B) Coronal & Axial T1-weighted MR image shows focal marrow edema and proliferative fatty mass of intermediate signal density in distended hip joint space.

Fig. 3

Images demonstrated uneven mild increased uptake diffuse increased uptake in right hip joint.

Fig. 4

(A) Intraoperative photograph shows pale, proliferating villi arising from synovial surface. (B) postoperative photograph showing the villous architecture of the synovium.

Fig. 5

Microscopic examination of the tumor reveals villous masses composed of mature adipocytes and lined by synovial cells (×40, inlet ×200).

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