Abstract
We recognized immunoreactivity for the α subset of inhibin and synaptophysin in synovial sarcomas with granular cell features. Histologic findings of 90 cases of synovial sarcoma were reviewed. Two (2.2%) of the 90 cases had granular cell features, showing sheet or nested proliferation of characteristic epithelioid cells with abundant eosinophilic and granular cytoplasm, in addition to the typical spindle cell component. The 2 cases were both female (aged 86 and 76 years). The tumors were located in the foot and the retroperitoneum and measured 3.5 and 14 cm in maximum diameter. Reverse transcriptase polymerase chain reaction analysis revealed SS18-SSX1 transcripts in both cases. SS18 gene rearrangement was detected in granular cells as well as spindle cells by chromogenic in situ hybridization. Immunohistochemistry found the granular cells to be positive for inhibin-α in both cases and for synaptophysin in 1 case, whereas spindle cells were not. Thirty-six cases (20 monophasic fibrous, 11 biphasic, and 5 poorly differentiated synovial sarcomas) were additionally examined for comparison; they showed no immunoreactivity for inhibin-α or synaptophysin. This is the first report of immunoreactivity for inhibin-α and synaptophysin in synovial sarcoma. These immunohistochemical findings might be characteristic of synovial sarcomas with granular cell features.
| Original language | English |
|---|---|
| Pages (from-to) | 850-857 |
| Number of pages | 8 |
| Journal | Human Pathology |
| Volume | 43 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jan 1 2012 |
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All Science Journal Classification (ASJC) codes
- Pathology and Forensic Medicine
Cite this
Inhibin-α and synaptophysin immunoreactivity in synovial sarcoma with granular cell features. / Setsu, Nokitaka; Kouhashi, Kenichi; Endo, Makoto; Yamamoto, Hidetaka; Ohishi, Yoshihiro; Sueyoshi, Kazunobu; Iwamoto, Yukihide; Tsuneyoshi, Masazumi; Motoi, Toru; Kumagai, Arisa; Oda, Yoshinao.
In: Human Pathology, Vol. 43, No. 6, 01.01.2012, p. 850-857.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Inhibin-α and synaptophysin immunoreactivity in synovial sarcoma with granular cell features
AU - Setsu, Nokitaka
AU - Kouhashi, Kenichi
AU - Endo, Makoto
AU - Yamamoto, Hidetaka
AU - Ohishi, Yoshihiro
AU - Sueyoshi, Kazunobu
AU - Iwamoto, Yukihide
AU - Tsuneyoshi, Masazumi
AU - Motoi, Toru
AU - Kumagai, Arisa
AU - Oda, Yoshinao
PY - 2012/1/1
Y1 - 2012/1/1
N2 - We recognized immunoreactivity for the α subset of inhibin and synaptophysin in synovial sarcomas with granular cell features. Histologic findings of 90 cases of synovial sarcoma were reviewed. Two (2.2%) of the 90 cases had granular cell features, showing sheet or nested proliferation of characteristic epithelioid cells with abundant eosinophilic and granular cytoplasm, in addition to the typical spindle cell component. The 2 cases were both female (aged 86 and 76 years). The tumors were located in the foot and the retroperitoneum and measured 3.5 and 14 cm in maximum diameter. Reverse transcriptase polymerase chain reaction analysis revealed SS18-SSX1 transcripts in both cases. SS18 gene rearrangement was detected in granular cells as well as spindle cells by chromogenic in situ hybridization. Immunohistochemistry found the granular cells to be positive for inhibin-α in both cases and for synaptophysin in 1 case, whereas spindle cells were not. Thirty-six cases (20 monophasic fibrous, 11 biphasic, and 5 poorly differentiated synovial sarcomas) were additionally examined for comparison; they showed no immunoreactivity for inhibin-α or synaptophysin. This is the first report of immunoreactivity for inhibin-α and synaptophysin in synovial sarcoma. These immunohistochemical findings might be characteristic of synovial sarcomas with granular cell features.
AB - We recognized immunoreactivity for the α subset of inhibin and synaptophysin in synovial sarcomas with granular cell features. Histologic findings of 90 cases of synovial sarcoma were reviewed. Two (2.2%) of the 90 cases had granular cell features, showing sheet or nested proliferation of characteristic epithelioid cells with abundant eosinophilic and granular cytoplasm, in addition to the typical spindle cell component. The 2 cases were both female (aged 86 and 76 years). The tumors were located in the foot and the retroperitoneum and measured 3.5 and 14 cm in maximum diameter. Reverse transcriptase polymerase chain reaction analysis revealed SS18-SSX1 transcripts in both cases. SS18 gene rearrangement was detected in granular cells as well as spindle cells by chromogenic in situ hybridization. Immunohistochemistry found the granular cells to be positive for inhibin-α in both cases and for synaptophysin in 1 case, whereas spindle cells were not. Thirty-six cases (20 monophasic fibrous, 11 biphasic, and 5 poorly differentiated synovial sarcomas) were additionally examined for comparison; they showed no immunoreactivity for inhibin-α or synaptophysin. This is the first report of immunoreactivity for inhibin-α and synaptophysin in synovial sarcoma. These immunohistochemical findings might be characteristic of synovial sarcomas with granular cell features.
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UR - http://www.scopus.com/inward/citedby.url?scp=84861201283&partnerID=8YFLogxK
U2 - 10.1016/j.humpath.2011.07.012
DO - 10.1016/j.humpath.2011.07.012
M3 - Article
C2 - 22055401
AN - SCOPUS:84861201283
VL - 43
SP - 850
EP - 857
JO - Human Pathology
JF - Human Pathology
SN - 0046-8177
IS - 6
ER -