BRAF analysis before surgery for papillary thyroid carcinoma: correlation with clinicopathological features and prognosis in a single-institution prospective experience.

BACKGROUND: Risk stratification in patients with papillary thyroid carcinoma (PTC) currently relies on postoperative parameters. Testing for BRAF mutations preoperatively may serve as a novel tool for identifying PTC patients at risk of persistence/recurrence after surgery. METHODS: The study involved 185 consecutive patients with a histological diagnosis of PTC and BRAF analysis performed on thyroid fine-needle aspiration biopsy (FNAB). We assessed BRAF status in FNAB specimens obtained before thyroidectomy for PTC, and examined its association with the clinicopathological characteristics identified postoperatively, and with outcome after a mean 55±15 months of follow-up. RESULTS: One hundred and fifteen of 185 (62%) PTCs carried a BRAF mutation. Univariate analysis showed that BRAF status correlated with the histological variant of PTC, cancer size, and stage at diagnosis, but not with gender, age, multifocality, or lymph node involvement. BRAF-mutated cases had a higher prevalence of persistent/recurrent disease by the end of the follow-up (11% vs. 8%), but this difference was not statistically significant. The Kaplan-Meier curve shows that among the patients with persistent/recurrent disease, BRAF-mutated patients needed a second treatment earlier than patients with BRAF wild-type, although the difference did not completely reach the statistical significance. CONCLUSIONS: Our study confirmed that preoperatively-identified BRAF mutation are associated with certain pathological features of PTC that correlate with prognosis. We speculate that it has a role in identifying PTCs that would generally be considered low-risk but that may reveal an aggressive behavior during their follow-up.

Follicular thyroid carcinoma with metastases to the pituitary causing pituitary insufficiency.

BACKGROUND: Pituitary metastases are found in about 1% of all pituitary resections. They often derive from breast, lung, and gastroenteric tract adenocarcinomas, very rarely from thyroid carcinoma. Presenting symptoms of thyroid carcinoma metastatic to the pituitary gland are usually chiasmatic with central neurological impairment due to space-occupying expansion in the parasellar region. Hypopituitarism is more often associated with papillary and medullary rather than follicular thyroid carcinoma (FTC). Here we describe a patient with pituitary metastasis from FTC who had hypopituitarism with thyrotropin (TSH) deficiency. SUMMARY: A 61-year-old woman, who presented with visual deficits and pain to the right orbit, was found on magnetic resonance imaging to have a large mass involving the pituitary gland. She was found to have pituitary insufficiency based on corticotropin-releasing hormone and TSH-releasing hormone testing. Transnasopharyngeal biopsy of the mass revealed metastases from FTC. After total thyroidectomy, which confirmed widely invasive FTC, the patient underwent external beam radiation therapy of the metastases for progressive neurological symptoms and an increase in orbit pain. Since endogenous TSH production was insufficient, we used recombinant human TSH (rhTSH) as preparation for a series of radioiodine treatments. rhTSH administration, followed by 7.4 GBq of (131)I, was repeated seven times over a 10-year period. This was associated with a marked decrease in serum thyroglobulin levels accompanied by substantial clinical improvement, but after 7 years disease progression occurred. CONCLUSIONS: Seven patients with pituitary metastases from FTC have been reported. In all cases, some neurological signs and symptoms related to mass effect were reported, but no pituitary insufficiency was described. This may be the first case of FTC with metastases to the pituitary causing hypopituitarism. It seems likely that management of such cases could be limited to biopsy to confirm thyroid carcinoma, rather than more extensive surgery, and that this could be followed by multiple treatments with rhTSH followed by (131)I.

A case of anaplastic thyroid cancer with long-term survival.

Anaplastic thyroid carcinoma (ATC) (less than 10% of all thyroid cancer) is a high-grade neoplasm, characterized by an aggressive clinical course and refractoriness to currently available local and systemic modalities of treatment. It is considered the most aggressive solid tumour, there is no adequate therapy for this disease and few patients with ATC live more than 1 year following diagnosis. We report herein an unusual case of ATC in a 59-year-old woman. She presented to our Institute in December 2004. She received many kinds of chemotherapeutical and multimodal treatment; we obtained a long period of localized disease (about two years) and an excellent response to therapy. She is still alive 58 months from diagnosis.

Neoadjuvant carboplatin and vinorelbine followed by chemoradiotherapy in locally advanced head and neck or oesophageal squamous cell carcinoma: a phase II study in elderly patients or patients with poor performance status.

BACKGROUND: The purpose of this study was to evaluate the efficacy and toxicity of neo-adjuvant carboplatin and vinorelbine followed by concomitant chemoradiotherapy in patients > or =70 years of age or with Karnofsky performance status (PS) 70-80, diagnosed with locally advanced head and neck (H&N) or oesophageal carcinoma. PATIENTS AND METHODS: The treatment plan consisted of three courses of carboplatin AUC4 on day 1 and vinorelbine 25 mg/m2 on day 1 and 8, every 21 days, followed by chemoradiotherapy. Carboplatin 100 mg/m2 was delivered weekly for the duration of the radiation therapy (70 Gy, 2 Gy/daily). RESULTS: Thirty-five patients with an average age of 68 years (range 42-85, 16 patients > or =70 years) were treated. Twenty-seven patients (77.1%) responded to neo-adjuvant chemotherapy (2 complete and 25 partial responses). Haematological toxicity was grade 3-4 in 13 patients (37.2%), while gastrointestinal toxicity was grade 3-4 in 20 patients (57.1%). All the patients completed the chemoradiotherapy plan, with grade 4 mucositis plus febrile neutropenia in 3 patients (8.5%). Median time to progression (TTP) was 10.2 months, with 31.5% of patients being alive at two years. CONCLUSION: The regimen of neo-adjuvant carboplatin and vinorelbine followed by chemoradiotherapy is feasible and active in older (> or =70 years) or low PS (Karnofsky 70-80) patients, although toxicity is not negligible and long-term outcome remains poor.