J Korean Bone Joint Tumor Soc.  2012 Dec;18(2):94-98. 10.5292/jkbjts.2012.18.2.94.

Intra-articular Benign Fibrous Histiocytoma of the Knee: A Case Report

• Hong KD
• Ha SS
• Sim JC
• Kim TH
• Lee JS
• Sung MC

• KMID: 1431677
• DOI: http://doi.org/10.5292/jkbjts.2012.18.2.94

Abstract

Benign fibrous hitiocytoma of the infrapatella fat pad is very rare. It has usually do not induced a pain or a symptom because it was located deep tissue. So it was very difficult to be diagnosed. We experienced a case of deep benign fibrous histiocytoma in a 53-year-old woman. It was diagnosed by MRI. Diagnostic arthroscopic procedure was performed and the lesion was completely resected by open excision. We report a rare case of benign fibrous hitiocytoma presenting as an intra-articular tumor in the joint causing pain and limitation of movement.

Keyword

knee; fibrous histiocytoma

MeSH Terms

Adipose Tissue
Female
Histiocytoma, Benign Fibrous
Humans
Joints
Knee

Figure

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  Figure 1 The initial plane X-ray shows no specific sign of bone.

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  Figure 2 (A) MRI of her right knee. The ovoid mass like lesion in the infrapatellar fat pad area, shows isointense on sagittal SE T1-weighted image. (B) MRI SE T2-weighted image of her right knee. This mass is relatively well defined margin and homogenous signal intensity.

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  Figure 3 Arthroscopic picture of the mass presents as a single mass measuring 36×30×20 mm in diameter. It has well defined capsule, and varies in color from reddish brown to dark brown.

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  Figure 4 (A) Microsopic finding of a benign fibrous histiocytoma. Characteristically most are composed of apindle cells arranged in fasicular form and round histiocyte like cells (H & E, ×200). (B) Microsopic finding of a benign fibrous histiocytoma stained by vitmentin (×400) presented positive.

Reference

1. Calonje E, Mentzel T, Fletcher CD. Cellular benign fibrous histiocytoma. Clinicopathologic analysis of 74 cases of a distinctive variant of cutaneous fibrous histiocytoma with frequent recurrence. Am J Surg Pathol. 1994. 18:668–676.

2. Ha KI, Han SH, Jung MY, Yang BG, Ryu JH. Benign fibrous histiocytoma of the knee. J Korean Knee Soc. 1993. 5:222–225.

3. Ushijima M, Hashimoto H, Tsuneyoshi M, Enjoji M. Giant cell tumor of the tendon sheath (nodular tenosynovitis) A study of 207 cases to compare the large joint group with the common digit group. Cancer. 1986. 57:875–884.

4. Yi GJ, Kim YS, Oh CW. A case of giant cell tumor of tendon sheath. Korean J Dermatol. 1993. 31:416–420.

5. Lee HP, Park HJ, Park YH, Kim JW, Suh EJ. A case of giant cell tumor of the tendon sheath developing on the dorsum of the foot. Korean J Dermatol. 1995. 33:1168–1171.

6. Fletcher CD. Benign fibrous histiocytoma of subcutaneous and deep soft tissue: a clinicopathologic analysis of 21 cases. Am J Surg Pathol. 1990. 14:801–809.

7. Jun IS, Kim NI, Haw CR. A case of giant cell tumor of the tendon sheath. Korean J Dermatol. 1994. 32:939–943.

8. Pinar H, Ozkan M, Ozaksoy D, Pabuççuoğlu U, Akseki D, Karaoğlan O. Intraarticular fibroma of the tendon sheath of the knee. Arthroscopy. 1995. 11:608–611.

9. Azouz EM. Benign fibrous histiocytoma of the proximal tibial epiphysis in a 12-year-old girl. Skeletal Radiol. 1995. 24:375–378.

10. Lee KB, Park RS, Lee EJ, Lee JY, Song KW, Park IH. Benign fibrous histiocytoma of the patellar fat pad: a report of one case. J Korean Knee Soc. 1997. 9:224–228.