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2000, Number 4

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Rev Inst Nal Enf Resp Mex 2000; 13 (4)

Solitary pulmonary node. Clinicopathological study of 122 cases.

Villalba CJ, Margarita Salazar FM, Pérez NJ, Morales GJ

Language: Spanish
References: 17
Page: 211-214
PDF size: 155.32 Kb.


ABSTRACT

Objective: To determine the frequency and clinicopathological characteristics of solitary pulmonary nodule at the Instituto Nacional de Enfermedades Respiratorias. Material and methods: Patient files from the Surgical Pathology Department of the Instituto Nacional de Enfermedades Respiratorias were selected from January 1, 1984, to December 31, 1999 with pathological anatomy or clinical diagnosis of solitary pulmonary nodule. Results: A total of 122 cases of solitary pulmonary nodule were found, 50% males and 50% females. Age varied from 3 to 81 years (average 54.5). Twenty-three (1.9%) were younger than 35 years of age. Smoking was positive in 47%. Histological diagnosis was given 82%; the most frequent was granuloma, with 70%, malignant tumors, 13%, benign tumors, 4%, chronic non-specific inflammation, 11% and others, 2%. Of the 13 cases of malignant tumors, 92% corresponded to primary pulmonary tumors, with predominance of adenocarcinoma, 1 metastasic tumor, 4 cases of benign tumors. Of 70 cases of granulomas, 34 were tuberculomas. The size of the solitary pulmonary nodule varied between 0.5 and 3.5cm of largest diameter. Conclusions: In the present study, granulomas are more frequent, and malignant tumors more infrequent than other series. A comparison of malignancy prevalence with reports by other authors shows that this series is lower, probably due to the higher prevalence of tuberculosis granuloma among our population.


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