The correlation between TTF-1 immunoreactivity and the occurrence of lymph node metastases in patients with lung cancer.

AIMS AND BACKGROUND: Thyroid transcription factor (TTF-1) is a tissue-specific transcription factor expressed in the epithelial cells of thyroid and lung. The aim of this study was to evaluate the relationship between the expression of TTF-1 and clinico-pathological parameters in pulmonary adenocarcinoma and adenosquamous carcinoma. METHODS: Resection material of pneumonectomies and lobectomies of 39 patients was retrospectively examined. Twenty-eight patients were diagnosed with adenocarcinoma and 11 with adenosquamous carcinoma. Tumors were classified into 3 groups: a strongly positive group (++) with double dagger 50% tumor cells positive for TTF-1; a weakly positive group (+) with 1-49% positive tumor cells; and a negative group (-) with less than 1% or no positive tumor cells. Analysis was performed with Kaplan-Meier estimates and log-rank tests. RESULTS: Staining for TTF-1 was negative in 10 cases. There was focal staining in 9 cases, while there was diffuse staining in 20 (51%) cases out of 39, and 15 (75%) of these were adenocarcinomas. There was a statistically significant association between TTF-1 and lymph node metastases (P = 0.029). No relationship was found between TTF-1 positivity and disease-free and overall survival. CONCLUSIONS: TTF-1 expression may be a predictor of lymph node metastases. Additional work in a larger group of patients is needed to better assess the utility of this marker.

A patient with ankylosing spondylitis who presented with chronic necrotising aspergillosis: report on one case and review of the literature.

Upper lobe fibrobullous disease is a well-known finding in advanced stages of ankylosing spondylitis (AS). In this report, we present a 57-year-old male patient who was diagnosed with a right apical cavitary lesion after coming to us with the complaint of haemoptysis. The patient underwent upper lobe segmentectomy and an aspergilloma was detected. Histologic findings were in favour of necrotising Aspergillus pneumonia. It was interesting that the patient had not been diagnosed with AS before and presented initially with chronic necrotising Aspergillus pneumonia. In the literature, there are recently published series of pulmonary high-resolution computed tomography (HRCT) in AS which claim that parenchymal abnormalities are quite frequent. Although the clinical significance of these abnormalities is not known with certainty, it has been reported that they might be seen even in early-stage patients. It is suggested that the pulmonary involvement in AS might be affected by mechanical factors related to limitation of motion of the thoracic cage and also by parenchymal inflammation. Here, we review the series of pulmonary HRCT in AS patients.