There was no difference in terms of ADC value between benign lymph nodes and those with metastatic cholangiocarcinoma. Isolated measurement of the ADC value does not contribute to a diagnosis of lymph node metastasis.

Highlights The study provides a cut-off value of RV diameter and CT obstruction index by CTPA to predict acute PE patients' mortality. RV diameter of 53 mm or over and CT obstruction index >70 % is associated with increased 30-day mortality in APE patients. Increased RV diameter by CTPA is a better predictor of mortality than the clinical Pulmonary Embolism Severity Index (PESI). CTPA can be valuable as both the diagnostic and prognostic tool in APE patients.