Myxoinflammatory Fibroblastic Sarcoma: MR Appearance and Pathologic Correlation.

Objective: The purpose of our study was to define the MR appearance of myxoinflammatory fibroblastic sarcoma of the soft tissues and to make correlations with the histopathologic features.

Conclusion: Myxoinflammatory fibroblastic sarcoma is an uncommon malignancy that typically affects adult subjects, who present with painless swelling. This lesion manifests on MR images as a poorly circumscribed mass involving the underlying tendon sheath in the distal extremities.

Mucin-producing adenocarcinoma of the lung: thin-section computed tomography findings in 48 patients and their effect on prognosis.

Objective: To determine the prognostic value of thin-section computed tomography (CT) findings in patients with mucin-producing adenocarcinoma (MPA) of the lung.

Methods: The study included 48 patients with pathologically proven MPA who had thin-section CT before treatment. The CT findings were correlated with the histopathologic findings and with disease-free survival on follow-up in all patients.

Chest wall tumors: radiologic findings and pathologic correlation: part 2. Malignant tumors.

Malignant chest wall tumors are classified into eight main diagnostic categories: muscular, vascular, fibrous and fibrohistiocytic, peripheral nerve, osseous and cartilaginous, adipose, hematologic, and cutaneous. However, there are malignant tumors that arise in the chest wall and that do not fit well in any of these categories (eg, Ewing sarcoma and synovial sarcoma). Malignant chest wall tumors typically manifest as painful, rapidly growing, large palpable masses.

Chest wall tumors: radiologic findings and pathologic correlation: part 1. Benign tumors.

Benign chest wall tumors are uncommon lesions that originate from blood vessels, nerves, bone, cartilage, or fat. Chest radiography is an important technique for evaluation of such tumors, especially those that originate from bone, because it can depict mineralization and thus indicate the diagnosis. Computed tomography (CT) and magnetic resonance (MR) imaging are helpful in further delineating the location and extent of the tumor and in identifying tumor tissues and types.

Gastrointestinal stromal tumor. Correlation of computed tomography findings with tumor grade and mortality.

Objectives: To assess computed tomography (CT) findings to assist in the distinction of low- and high-grade gastrointestinal stromal tumors (GISTs) and to estimate their relative risk (RR) for mortality.

Methods: Sixty-nine patients with clinicopathologically and immunohistochemically proven GISTs, including 44 patients with low-grade tumors and 25 with high-grade tumors, who underwent dual-phase CT for initial examination were included. Images were assessed retrospectively for tumor size, location, epicenter, types of surface, boundary, presence of invasion, enhancement pattern, hepatic metastasis, and peritoneal dissemination.