We report 5 patients with cellular ovarian fibromas, which contained heavy depositions of hyaline globules, a remarkable and very conspicuous histologic feature of all tumors. The hyaline globules ranged in size from 1 to 25 microm. Some cells were stuffed with myriads of small hyaline globules 1 to 3 microm in size, whereas in the other cells the globules were up to 25 microm in size. The hyaline globules were stained with periodic acid-Schiff, and were mucicarmine and Alcian blue negative. These hyaline globules were present, at least in small numbers, in all 100 hematoxylin and eosin slides reviewed from all 5 cases in this series. Often the cells containing the hyaline globules showed a signet-ring appearance in the more compact cellular areas. All the tumors in our series appear to have a benign course. The patients were without signs of recurrence and without metastasis 1, 2, 3, and 6 years after the excision of the neoplasms. Follow-up in one of the patients was not available. The distinction of the ovarian fibromas with hyaline globules from the Krukenberg tumors and yolk sac tumor is discussed in the paper.
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