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A true intra-articular lipoma of the knee in a girl.
Arthroscopy 2002 May-Jun; 18(5):E24A

Abstract

A 16-year-old girl presented with a soft-tissue mass in the anterolateral aspect of her right knee. Magnetic resonance imaging revealed an intra-articular tumor arising from the anterior fat pad of the knee. The tumor showed low signal intensity on T1-weighted images and high signal intensity on T2-weighted images. It was resected under arthroscopic guidance. Grossly, the tumor was composed of soft, yellowish adipose tissue. Pathologic examination revealed a collection of mature adipocytes with marked myxoid changes in the matrix. A diagnosis of lipoma was made. True intra-articular lipomas should be distinguished from lipoma arborescens, which is considered to be a reactive process. In the English language literature, we found only 7 cases of true intra-articular lipoma reported previously. The present case is the youngest patient with such a tumor, and all the previous reports are of the tumor in adult patients. Intra-articular lipoma should be considered in the differential diagnosis of intra-articular masses in adolescents.

Authors+Show Affiliations

Department of Orthopaedic Surgery, Kobe University School of Medicine, Kobe, Japan. tmarui@med.kobe-u.ac.jp

Pub Type(s)

Case Reports
Journal Article

Language

eng

PubMed ID

12632038

Citation

Marui, Takashi, et al. "A True Intra-articular Lipoma of the Knee in a Girl." Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association, vol. 18, no. 5, 2002, pp. E24.
Marui T, Yamamoto T, Kimura T, et al. A true intra-articular lipoma of the knee in a girl. Arthroscopy. 2002;18(5):E24.
Marui, T., Yamamoto, T., Kimura, T., Akisue, T., Nagira, K., Nakatani, T., ... Kurosaka, M. (2002). A true intra-articular lipoma of the knee in a girl. Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association, 18(5), pp. E24.
Marui T, et al. A True Intra-articular Lipoma of the Knee in a Girl. Arthroscopy. 2002;18(5):E24. PubMed PMID: 12632038.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A true intra-articular lipoma of the knee in a girl. AU - Marui,Takashi, AU - Yamamoto,Tetsuji, AU - Kimura,Takuya, AU - Akisue,Toshihiro, AU - Nagira,Keiko, AU - Nakatani,Tetsuya, AU - Hitora,Toshiaki, AU - Kurosaka,Masahiro, PY - 2003/3/13/pubmed PY - 2003/12/3/medline PY - 2003/3/13/entrez SP - E24 EP - E24 JF - Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association JO - Arthroscopy VL - 18 IS - 5 N2 - A 16-year-old girl presented with a soft-tissue mass in the anterolateral aspect of her right knee. Magnetic resonance imaging revealed an intra-articular tumor arising from the anterior fat pad of the knee. The tumor showed low signal intensity on T1-weighted images and high signal intensity on T2-weighted images. It was resected under arthroscopic guidance. Grossly, the tumor was composed of soft, yellowish adipose tissue. Pathologic examination revealed a collection of mature adipocytes with marked myxoid changes in the matrix. A diagnosis of lipoma was made. True intra-articular lipomas should be distinguished from lipoma arborescens, which is considered to be a reactive process. In the English language literature, we found only 7 cases of true intra-articular lipoma reported previously. The present case is the youngest patient with such a tumor, and all the previous reports are of the tumor in adult patients. Intra-articular lipoma should be considered in the differential diagnosis of intra-articular masses in adolescents. SN - 1526-3231 UR - https://www.unboundmedicine.com/medline/citation/12632038/A_true_intra_articular_lipoma_of_the_knee_in_a_girl_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0749806302640800 DB - PRIME DP - Unbound Medicine ER -