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  • Title: Long-term complete remission of Crooke's corticotropinoma after temozolomide treatment.
    Author: Kurowska M, Tarach JS, Malicka J, Zieliński G, Maksymowicz M, Denew P.
    Journal: Endokrynol Pol; 2016; 67(5):526-533. PubMed ID: 27828691.
    Abstract:
    INTRODUCTION: Crooke's corticotropinomas are the unique cause of Cushing's disease. The majority of them are aggressive macroadenomas, refractory to conventional therapy, with a high recurrence rate. The aim of the study was the presentation, in relation to data from the literature, of a case of a patient with ACTH-dependent Cushing's syndrome caused by recurrent Crooke's cells corticotropinoma, who achieved 33-month complete remission after treatment with temozolomide (TMZ). CASE REPORT: A 54-year-old man was diagnosed with Cushing's disease five years earlier on the basis of a typical clinical picture and hormonal tests. MRI revealed 32 × 29 × 24 mm macroadenoma. The patient underwent three subtotal selective transsphenoidal adenomectomies without retirement of hypercortisolaemia. A postoperative pathologic exploration revealed a densely granulated corticotroph Crooke's cells adenoma with MIB-1 index < 1%. Because of the large size of the tumour with its expansion to both cavernous sinuses and suprasellar region together with a compression of the optic chiasm, the patient was disqualified for gamma-knife. Due to an exhaustion of all conventional therapeutic options the patient was qualified to TMZ therapy. The standard dose of TMZ (150 g/m²) for five days every 28 days was implemented. After three courses of TMZ pronounced regression of tumour size with a marked hormonal and clinical improvement was certified. After six courses, consecutive tumour regression was observed. Nine courses resulted in a total radiological tumour shrinkage and hormonal normalisation. Despite the cassation of TMZ treatment the complete remission of the disease maintained for 33 months. CONCLUSION: Temozolomide can be an effective treatment option in invasive Crooke's cell corticotropinoma. (Endokrynol Pol 2016; 67 (5): 526-533).
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