J Korean Orthop Assoc.  2014 Feb;49(1):69-73. 10.4055/jkoa.2014.49.1.69.

Granular Cell Tumor in the Sartorius Muscle

• Kim JB
• Choi KM
• Kwon SW
• Nho JH
• Suh YS
• Park JS

• KMID: 2185258
• DOI: http://doi.org/10.4055/jkoa.2014.49.1.69

Abstract

Granular cell tumor, a soft tissue neoplasm that originates in the nervous system, is a very unusual tumor. Granular cell tumor appears as a solitary painless lesion, which can arise at virtually any body site, but is mainly found on the skin, oral cavity, respiratory tract or digestive tract. However, an intramuscular granular cell tumor is very rare. We report on a case of a granular cell tumor in the sartorius muscle in a 71-year-old male patient along with a review of the literature.

Keyword

granular cell tumor; neoplasm; intramuscular tumor; malignancy

MeSH Terms

Aged
Gastrointestinal Tract
Granular Cell Tumor*
Humans
Male
Mouth
Muscles*
Nervous System
Respiratory System
Skin
Soft Tissue Neoplasms

Figure

• 

  Figure 1 Preoperative ultrasound image shows a low echoic mass measuring 6×4 cm in size with a central high echoic lesion in the sartorius muscle.

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  Figure 2 (A) Coronal non-contrast T1-weighted image of the pelvis shows a low signal intensity mass within the mid portion of the sartorius muscle measuring 6×5×4 cm in size (arrow). (B) Coronal non-contrast T2-weighted image shows a low signal intensity mass with peripheral ovoid high signal intensity. (C) T1-weighted enhanced image shows a heterogeneous enhancing mass with a clear margin. (D) Axial T1-weighted enhanced image shows a mass in the mid portion of the sartorius muscle.

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  Figure 3 (A) The submitted specimen was comprised of a well demarcated ovoid mass measuring 4×5×6 cm in size. (B) On sectioning, a pale yellow surface with firm consistency was observed.

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  Figure 4 Histologic examination showed the characteristic appearance of nests of large polyhedral cells with abundant granular cytoplasm (H&E, ×400).

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