Melan-A (A103) immunostaining in ovarian sex cord stromal tumours

Primary adult granulosa cell tumour

8/18

Metastatic adult granulosa cell tumour

2/3

Juvenile granulosa cell tumour

2/2

Sertoli cell tumour

1/1

Sertoli-Leydig cell tumour

5/7

Unclassified sex cord stromal tumour

0/2

gonadoblastoma

0/2

Sex cord tumour with annular tubules

5/7

Steroid cell tumour

2/2

Thecoma/fibrothecoma

3/5

Sclerosing stromal tumour

2/2

Primary endometrioid carcinoma (Occasional immunoreactive stromal cells in two cases.)

0/8

Primary undifferentiated carcinoma (Occasional immunoreactive stromal cells in one case.)

0/6

Metastatic carcinoma

0/13

Carcinoid tumour (Occasional immunoreactive stromal cells in one case.)

0/4

Malignant lymphoma

0/4

Endometrioid stromal sarcoma

0/3

Ovarian tumour of probable Wolffian origin

2/2

Small cell carcinoma

0/1

Desmoplastic small cell carcinoma

0/1

Primary ovarian melanoma

1/1

Primitive neuroectodermal tumour

0/1

Reference:
Stewart CJR et al. Value of A103 (melan-A) immunostaining in the differential diagnosis of ovarian sex cord stromal tumours. J Clin Pathol 2000; 53: 206-211.