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A solitary pulmonary nodule (SPN) or coin lesion, [1] is a mass in the lung smaller than three centimeters in diameter. A pulmonary micronodule has a diameter of less than three millimetres. [2] There may also be multiple nodules. One or more lung nodules can be an incidental finding found in up to 0.2% of chest X-rays [3] and around 1% of CT ...
On radiological studies, thoracic splenic lesions are visualized using CT scans. Visualized lesions can be described as solitary or multiple nodules. The locations of the lesions are mostly in the lower left pleural space and/or splenic bed. Confirmation can be done using scintigraphy with 99mTc tagged heat-damaged red blood cells. [6]
Pleuropulmonary blastoma is classified into 3 types: Type I is multicystic; Type II shows thickening areas (nodules) within this cystic lesion; Type III shows solid masses. Type I PPB is made up of mostly cysts, and may be hard to distinguish from benign lung cysts, and there is some evidence that not all type I PPB will progress to types II ...
In contrast a large pleural effusion, or the presence of a significant amount of fluid in the pleural space, may be a sign of active TB at any age. Solitary calcified nodules or granuloma - Discrete calcified nodule or granuloma, or calcified lymph node. The calcified nodule can be within the lung, hila, or mediastinum.
Differentiating between pre-malignancy and malignancy on the basis of CT alone can pose a challenge to radiologists; however, there are several features that are indicative of pre-malignant nodules. AAH is a pre-malignant cause of nodular GGO and is more commonly associated with lower attenuation on CT and smaller nodule size (<10 mm) compared ...
The appearance on a postero-anterior chest radiograph is of a continuous, irregular pleural shadowing. In accordance with the International Labour Organization (2000) classification, diffuse pleural thickening is considered to be present if there is obliteration of the costophrenic angle in continuity with ≥3 mm pleural thickening. [14]
Pleural fluid cytology is positive in 60% of cases. However, in the remaining cases, pleural biopsy is required. Image guided biopsy and thoracoscopy have largely replaced blind biopsy due to their greater sensitivity and safety profile. CT guided biopsy has a sensitivity of 87% compared to Abrams' needle biopsy, which has a sensitivity of 47%. [9]
T1c: Primary tumor is >2 but ≤3 cm in greatest dimension. T2a: Primary tumor is >3 and ≤5 cm in greatest dimension. T2b: Primary tumor is >5 and ≤7 cm in greatest dimension. T3 size: Primary tumor is >7 cm in greatest dimension; T3 inv: Primary tumor invades the chest wall, diaphragm, phrenic nerve, mediastinal pleura, or pericardium;
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