ArticleBrain tumor pathology2026
Meningioma enlargement associated with luteinizing hormone-releasing hormone agonist therapy: two cases and supporting in vitro evidence.
Article in Brain tumor pathology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Luteinizing hormone-releasing hormone (LHRH) agonists are widely used for androgen-deprivation therapy in prostate cancer. Recent reports have raised concern that LHRH may influence the biological behavior of LHRH receptor-expressing intracranial tumors, including meningiomas; however, clinical evidence remains limited. We describe two cases of rapidly progressive meningioma temporally associated with the initiation of leuprorelin acetate. Case 1 was a 67-year-old man with a left cerebellopontine angle meningioma that had demonstrated gradual enlargement over 26 months. Following the initiation of leuprorelin acetate, the tumor exhibited accelerated growth, necessitating surgical resection. Pathology confirmed a fibrous meningioma with LHRH and its receptor positive. Case 2 was a 72-year-old man previously treated with subtotal resection and radiotherapy for an atypical meningioma. After 6 years of radiographic stability, the tumor rapidly regrew soon after leuprorelin acetate initiation and required re-resection. Both the primary and recurrent tumors were LHRH- and LHRH receptor-positive. Freshly resected tumor tissue cultured ex vivo demonstrated a dose-dependent increase in cell viability following 7-day exposure to leuprorelin acetate. These findings suggest that LHRH agonists may be associated with increased cell viability in a subset of receptor-positive meningiomas. Caution is warranted when initiating LHRH agonist therapy in patients with known or suspected meningiomas.
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