PMC3861583_01
CT scan showing a large mass, 14.1x6.7 cm2 in size, in the anterior mediastinum. CT, computed tomography.
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Computed tomography (CT) scans (Figs. 1 and 2) showed a large, patchily enhanced mass in the anterior mediastinum, which extended into the left thyroid gland.
CT scan showing that the mass extends into the left thyroid gland. CT, computed tomography.
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Computed tomography (CT) scans (Figs. 1 and 2) showed a large, patchily enhanced mass in the anterior mediastinum, which extended into the left thyroid gland.
HE staining showing malignant mesenchymal tumor tissue. HE, hematoxylin-eosin.
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A histological examination (Fig. 3) showed malignant mesenchymal tumor tissue involving the left innominate vein.
Immunochemistry examination revealing EMA(+) tissue.
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An immunochemistry examination revealed the following results: EMA(+), Vim(+), S100(+), CD99(+), Ki-67(+), CD117(-), CD34(-), SAM(-), HMB(-), CK(-) and p53(-) (Figs. 4-7), confirming the lesion as a monophasic synovial sarcoma.
Immunochemistry examination revealing VIM(+) tissue.
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An immunochemistry examination revealed the following results: EMA(+), Vim(+), S100(+), CD99(+), Ki-67(+), CD117(-), CD34(-), SAM(-), HMB(-), CK(-) and p53(-) (Figs. 4-7), confirming the lesion as a monophasic synovial sarcoma.
Immunochemistry examination revealing CD99(+) tissue.
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An immunochemistry examination revealed the following results: EMA(+), Vim(+), S100(+), CD99(+), Ki-67(+), CD117(-), CD34(-), SAM(-), HMB(-), CK(-) and p53(-) (Figs. 4-7), confirming the lesion as a monophasic synovial sarcoma.
Immunochemistry examination revealing S100(+) tissue.
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An immunochemistry examination revealed the following results: EMA(+), Vim(+), S100(+), CD99(+), Ki-67(+), CD117(-), CD34(-), SAM(-), HMB(-), CK(-) and p53(-) (Figs. 4-7), confirming the lesion as a monophasic synovial sarcoma.
Follow-up CT subsequent to surgery showing a soft tissue mass of 5 cm in diameter found in the anterior mediastinum. CT, computed tomography.
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One month after surgery, a follow-up CT scan (Fig. 8) showed a patchily enhanced soft tissue mass, 5 cm in diameter, in the anterior mediastinum, while the neck structure was clear.
Follow-up CT subsequent to chemotherapy revealing no mass in the mediastinum. CT, computed tomography.
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A thoracic CT (Fig. 9) was performed again following chemotherapy and revealed no mass in the mediastinum or neck.