Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A PleurX catheter is traced at minimum to the level of the medial anterior right costophrenic recess . It may extend cranially within the anterior pleural space , however , it s tip is not clearly visualized . There is no pneumothorax . A small right pleural effusion is not significantly changed in size . Abnormal widening of the right 4 through 5 rib posterior rib interspace due to the known pleural - based metastasis is again noted , unchanged .
    OUTPUT:
    
Right lung base PleurX catheter trace at minimum to the level of the medial anterior right costophrenic recess , however its tip is not clearly visualized . An anterior oblique radiograph may be obtained to better assess its position . Stable small right pleural effusion . No pneumothorax .