Growth of a solitary pulmonary nodule after 6years diagnosed as oncocytic carcinoid tumour with a high 18-fluorodeoxyglucose (18F-FDG) uptake in positron emission tomography-computed tomography (PET-CT).
Clin Respir J
; 7(1): e1-5, 2013 Jan.
Article
en En
| MEDLINE
| ID: mdl-22129499
ABSTRACT
INTRODUCTION:
Pulmonary carcinoid tumour is low-grade neuroendocrine malignancy that is seen 1%-2% of all lung neoplasms. Oncocytic carcinoid type is a rarely seen variant of pulmonary carcinoids. As carcinoid tumours have hypometabolic activity, they usually have lower 18-fluorodeoxyglucose (18F-FDG) uptake than expected for lung carcinoma on positron emission tomography (PET). CASE REPORT A 45-year-old non-smoking man had a stable solitary pulmonary nodule followed for 6years; the tumour remained the same size (1.5×2.4cm) during this period. The patient was admitted to the hospital with complaints of repetitive sneezing and rhinorrhoea. He also experienced flushing and bronchospasm. His chest X-ray revealed a minimal increase in the size of the solitary pulmonary nodule (2.0×2.8cm). In PET-computed tomography (CT), the parenchymal nodule in the anterior segment of the right lung had a standard uptake value of 38.0mg/mL, which was interpreted as a malignant nodule. He underwent fibre-optic bronchoscopy, but cytology showed no evidence of malignancy. Right upper and middle bilobectomy was performed, and a pulmonary carcinoid tumour with an oncocytic subgroup was diagnosed. The diagnosis of carcinoid syndrome was further confirmed by an elevated 24-h urinary excretion of 5-hydroxyindoleacetic acid.CONCLUSION:
We present a rare case of an oncocytic carcinoid tumour with an increase in the size of a solitary pulmonary nodule after 6years' follow-up. In addition, PET-CT showed a very high 18F-FDG uptake in this patient, which is an unexpected finding with a pulmonary carcinoid tumour.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Tumor Carcinoide
/
Tomografía Computarizada por Rayos X
/
Tomografía de Emisión de Positrones
/
Imagen Multimodal
/
Neoplasias Pulmonares
Tipo de estudio:
Diagnostic_studies
/
Observational_studies
/
Prognostic_studies
Límite:
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Clin Respir J
Año:
2013
Tipo del documento:
Article
País de afiliación:
Turquía