Radiologic and clinicopathologic findings of peripheral primitive neuroectodermal tumors.

Background: Primitive neuroectodermal tumors (PNETs) constitute a rare type of malignant neuroectodermal tumors that have chromosomal translocations identical to Ewing's sarcoma (ES), and the characteristics of this disease remain unclear.

Purpose: To describe the clinical, radiological, and pathological features of peripheral PNETs (pPNETs) to enhance their recognition.

Material And Methods: The clinical, imaging, and pathologic findings of 35 patients with pPNETs were retrospectively reviewed, all being confirmed by biopsy or surgical pathology.

[HRCT and pathology for nodules in cadaveric lung with coal workers' pneumoconiosis].

Objective: To evaluate imaging of high-resolution computed tomography (HRCT) for nodules of cadaveric lungs of coal workers' or coal workers with coal workers' pneumoconiosis (CWP) and to determine types of small nodules of CWP and dust speckle based on CT-pathologic correlation.

Methods: Thirty-two entire lung specimens were available from autopsy of the patients with CWP and coal workers occupationally exposed to coal dusts. They comprised 25 workers without CWP, 3 patients with 0+ stage and 4 patients with I stage.