ACTA ENDOCRINOLOGICA (BUC)

for non-functioning pituitary macroadenomas (NFMAs) is still under debate. Aim. To appreciate the best timing for postoperative high voltage radiotherapy (hRT) in different type of NFMAs (classified using immunohistochemistry (IHC)). Subjects and Methods. Of 97 patients with a remnant (>1 cm) and IHC for anterior pituitary hormones, 41 patients (groups A & B) were submitted to hRT and followed up at least 5 years. RT was performed in 20/41 patients (Group A) within the first year after surgery, 21/41 patients (Group B) afterwards while in control group C, 56 patients were followed up without hRT. The progression of postoperative remnant was defined as a change of minimum of 25% of any diameter (transversal or vertical) by serial imaging studies. Results. The IHC of NFMAs revealed the following: 38 (39%) null cell, 29 (30%) gonadotropinomas, 12 (12%) silent plurihormonal, 11 (11%) silent corticotroph and 7 (7%) silent GH/PRL adenomas. Immunoreactive adenomas have relapse rate higher than null cell adenomas (ACTH> GH/ PRL> FSH/ LH> null cell) with a significant rate for silent ACTH 6/8 (75%). The null cell adenoma relapse rate was 6/23 (26%), p<0.009 in group without hRT. The relapse rate was significantly lower in group AB with hRT than in group without RT (p=0.025), at five years. Immediate hRT (applied within in first years) improved the control of the tumour growth in 90% (18/20) cases. In the group A, 10 % (2/20) patients relapsed than 24% (5/21) patients in group B and 39% (22/56) patients, Group C. Conclusion. An optimal time for radiotherapy is within the first year after the partial surgical removal of NFMAs, particularly if a large amount of residual tumour remains. Patients with silent corticotroph adenoma require special attention.

Background. Paraganglioma develop from embryological neural crest cells from the base of the skull, mediastinum, retroperitoneum, urinary bladder and scrotum. The most common location of the retroperitoneal form is situated between the aorta and vena cava, at the level of left renal vein, or more distally, to the aortic bifurcation. The care of patients with paraganglioma is a challenge for many physicians and surgeons because of its clinical features and therapeutic implications. Case presentation. We report the case of a 22-years old female patient with symptomatic retroperitoneal paraganglioma who was successfully treated with complete surgical excision. The pathological report confirmed the presence of chromaffin tumours. Postoperative care was uneventful, the patient being discharged after 10 days. Follow-up evaluation showed no recurrence after 4 years. Conclusion. Although a very rare condition, retroperitoneal paraganglioma has to be considered in the differential diagnosis of retroperitoneal tumours. Complete surgical resection is crucial for treatment and histological assessment as these tumours are potentially curable if they are diagnosed correctly. In our experience, the best surgical approach is open surgical excision for large masses located in the interaortocaval region, with a clear operatory field and good control over the major blood vessels. Follow-up is strongly recommended.

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