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  • Title: Unclassified sex cord-stromal tumors of the ovary: a report of eight cases.
    Author: Simpson JL, Michael H, Roth LM.
    Journal: Arch Pathol Lab Med; 1998 Jan; 122(1):52-5. PubMed ID: 9448017.
    Abstract:
    OBJECTIVE: To evaluate the histologic features and biologic behavior of unclassified sex cord-stromal tumors. PATIENTS: The eight patients' ages at presentation ranged from 14 to 83 years. Presenting symptoms and physical findings included abdominal pain, abnormal uterine bleeding, ascites, and abdominal and pelvic masses. One patient also had bilateral sex cord tumors with annual tubules and probable Peutz-Jeghers syndrome. RESULTS: The tumors ranged from 4 to 27 cm in diameter and were described as partially encapsulated, solid, and cystic. Histologically, the tumors were composed of diffuse proliferations of sex cord cells, with cords, tubules, and follicle-like structures. The stromal cells were spindle-shaped, with scanty cytoplasm. The neoplasms were vimentin-positive and, sometimes, cytokeratin CAM 5.2- and AE1/3-positive and epithelial membrane antigen-negative. Six patients were disease-free from 2 months to 6 years after operation. One patient was lost to follow-up. The patient with probable Peutz-Jeghers syndrome had a tumor with unusual morphology and died of the neoplasm 4 years after the diagnosis. Three of 32 other cases with clinical follow-up mentioned in the pathology literature have been associated with a malignant behavior. CONCLUSION: The biologic behavior of unclassified sex cord-stromal tumors resembles that of Sertoli-Leydig cell tumors of intermediate differentiation rather than poorly differentiated tumors, which might have been expected in view of the lack of specific differentiation. This finding is important with regard to postoperative management.
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