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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.jpNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

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 -