Search results
Results from the WOW.Com Content Network
According to the International Labour Office (ILO), PMF requires the presence of large opacity exceeding 1 cm (by x-ray). By pathology standards, the lesion in histologic section must exceed 2 cm to meet the definition of PMF. [6] In PMF, lesions most commonly occupy the upper lung zone, and are usually bilateral.
The most common mediastinal masses are thymoma (20% of mediastinal tumors), usually found in the anterior mediastinum, followed by neurogenic Timor (15–20%) located in the anterior mediastinum. [1] Lung cancer typically spreads to the lymph nodes in the mediastinum.
The most common cause of a single lung cavity is lung cancer. [4] Bacterial, mycobacterial, and fungal infections are common causes of lung cavities. [5] Globally, tuberculosis is likely the most common infectious cause of lung cavities. [6] Less commonly, parasitic infections can cause cavities. [5] Viral infections almost never cause cavities ...
Large-cell lung carcinoma (LCLC), or large-cell carcinoma (LCC) in short, is a heterogeneous group of undifferentiated malignant neoplasms that lack the cytologic and architectural features of small cell carcinoma and glandular or squamous differentiation. [1]
In a radiographic study of almost 2,000 lung cancer patients published 50 years ago, 3.4% of lung carcinomas proved to be cavitated masses, [34] most of which were squamous cell carcinoma. In a number of cases of severe cavitation, the resected tumor remnant consists of only a thin rim of proliferating cells.
Basaloid forms of lung carcinoma were first described in the peer-reviewed medical literature by Dr. Elisabeth Brambilla and her colleagues in 1992. [11] They were first recognized as distinct clinicopathological variants of both squamous cell and large cell lung cancers in 1999, within the third revision of the World Health Organization lung tumor typing and classification scheme.
Squamous-cell carcinoma of the lung is closely correlated with a history of tobacco smoking, more so than most other types of lung cancer.According to the Nurses' Health Study, the relative risk of SCC is approximately 5.5, both among those with a previous duration of smoking of 1 to 20 years, and those with 20 to 30 years, compared to never-smokers. [2]
Emphysema is a lower respiratory tract disease, [7] characterised by enlarged air-filled spaces in the lungs, that can vary in size and may be very large. The spaces are caused by the breakdown of the walls of the alveoli , which replace the spongy lung tissue .