Transbronchial lung biopsy in the diagnosis of lymphangitic carcinomatosis
In the present cases, CT showed a consolidative mass with bronchovascular bundle and septal thickening, mimicking lung cancer with lymphangitic carcinomatosis
. The features of lymphangitic carcinomatosis
are infiltration of cancer cells and interstitial edema in and around lymphatic vessels caused by lymph node metastasis in the lung.
Docetaxel-induced hypersensitivity pneumonitis mimicking lymphangitic carcinomatosis
in a patient with metastatic adenocarcinoma of the lung.
On postoperative day 2, the surgical lung biopsy demonstrated signet-ring cell pulmonary tumor embolism and lymphangitic carcinomatosis
. Figures 2 and 3 depict histological sections demonstrating lymphangitic carcinomatosis
of the lung and tumor thrombus in both arterial and venous pulmonary vasculatures.
CT findings in lymphangitic carcinomatosis
of the lung: correlation with histologic findings and pulmonary function tests.
The most common cause of the linear pattern is hydrostatic pulmonary edema (Figure 1), but other etiologies include lymphangitic carcinomatosis
(Figure 2), and atypical interstitial pneumonias such as those caused by mycoplasma, chlamydia, cytomegalovirus (CMV), and respiratory syncytial virus (RSV).