TABLE 2 Immunohistochemical Reactivity in 30 Cases of Urinary Bladder Spindle Cell Tumor

From: Inflammatory Pseudotumor and Sarcoma of Urinary Bladder: Differential Diagnosis and Outcome in Thirty-Eight Spindle Cell Neoplasms

Antigen

Inflammatory Pseudotumor

Postoperative Spindle Cell Nodule

Low-Grade Leiomyosarcoma

High-Grade Leiomyosarcoma

Carcinoma

Number of cases stained

14

4

5

4

3

p53 protein

7/10

3/4

5/5a

4/4a

nd

Pan-cytokeratin

5/14

2/4

1/5

2/3

2/3

Epithelial membrane antigen

4/8

1/3

0/5

1/3

1/2

Smooth muscle actin

5/8

2/4

1/3

2/4

2/3

Muscle-specific actin

5/9

2/3

1/4

0/1

1/2

Desmin

3/11

2/3

0/5

0/3

0/3

Vimentin

10/10

4/4

5/5

2/2

1/1

S-100 protein

0/4

0/3

nd

0/2

nd

  1. aa Excludes two cases from 1928 and 1929, which were negative, probably reflecting lost immunogenicity.
  2. nd, not done.
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