Nipple shadows can often mimic pulmonary nodules. Clues to nipples being the source of the apparent nodules on the lateral radiograph, bilaterally and “lesions” whose inferior and lateral borders appear sharper than their superior and medial margins....
Components of the PA mediastianl shadow (A) include SVC (1), ascending aorta (2), RA (3), IVC (4), aortic arch (5), pulmonary trunk (6), LA appendage (7), and LV (8). Mediastinal compartments on the lateral film (B) include: superior (S), anterior (A), middle (M) and...
This is a normal lateral film of a female patient. Note the spine (sp), anterior costophrenic angle (acpa), gastric air bubble (gab), trachea (tr), left mainstem bronchus (lbr), right mainstem bronchus (rbr), aortic arch (ao), anterior/retrosternal (acs) and...
On a film taken in full inspiration, the right hemidiaphragm should project over the 6th anterior interspace or 10th rib posteriorly. Films taken without a full inspiration are described as having a “poor inspiratory result”. This may result from a poor inspiratory...
Hypertrophic First Rib Rib hypertrophy, often at the costochondral junction and particularly involving the first rib, commonly mimics a lung nodule on the PA projection. It has been called “the medical student’s tumor.” Clues that the “nodule” is in fact due to rib...
This patient has a well circumscribed mass in the posterior mediastinum. The valve of the lateral view is well depicted in this case; on the frontal radiograph there is no way to localize the lesion. The differential diagnosis for a posterior mediastinal mass...
This patient has a large mass in the middle mediastinum. The differential diagnosis for such a mass includes: lymphoma or other lymphadenopathy lung cancer aortic aneurysm or other vascular abnormality abscess hematoma esophageal carcinoma, esophageal duplication cyst...
PA and lateral chest radiographs of a hiatal hernia. Left: PA chest view demonstrates a retrocardiac lucency with well defined lateral margins. Right: Lateral radiograph shows a large hiatal hernia in the middle mediastinum. Hiatal hernia is the most common...
Radiologists divide the mediastinum into 3 compartments. The most popular classification is Felson’s division of the thorax into the following 3 compartments: Anterior: Everything from the sternum to the posterior aspect of the heart and great vessels. Middle: The...
There is a large mass in this patient’s anterior mediastinum. The differential diagnosis for such a mass includes: lymphomA lung cancer aortic aneurysm or other vascular abnormality abscess hematoma teratoma, thyroid, parathyroid or thymic neoplasm thymic or...
