An imaging-guided core needle biopsy has been proven to be reliable and accurate for the diagnosis of both benign and malignant diseases of the breast, and has replaced surgical biopsy. However, the possibility of a false-negative biopsy still remains. Imaging-pathology correlation is of critical importance in imaging-guided breast biopsies to detect such a possible sampling error and avoid a delay in diagnosis. We will review five possible categories and corresponding management after performing an imaging-pathology correlation in a sonography-guided core needle biopsy of a breast lesion, as well as illustrate the selected images for each category in conjunction with the pathologic finding. Radiologists should be familiar with the imaging features of various breast pathologies and be able to appropriately correlate imaging findings with pathologic results after a core needle biopsy.

SPIO-enhanced MRI can be useful in evaluating infectious disease of the joint or soft tissue and is influenced by the uptake of iron particles in fibroblasts as well as macrophages.

Intranuclear pseudoinclusions are well known in papillary carcinomas of the thyroid gland, hepatocellular carcinomas, meningiomas, paragangliomas, pheochromocytomas, and melanomas. Only two papers on the intranuclear inclusions of adenohypophyseal cells in humans have been reported. This study found that intranuclear cytoplasmic pseudoinclusions occur frequently in pituitary adenoma cases (70.3%, 97 of 138 pituitary adenomas) and are uncommon in normal pituitary tissue (11.1%, 1 of 9 normal pituitary tissues). In addition, the frequency of intranuclear cytoplasmic pseudoinclusions between the functional and non-functional pituitary adenomas was found to be similar. Electron microscopy and immunostaining was used to reveal the entity of the intranuclear inclusion. These intranuclear inclusions are due to cytoplasmic invagination because 1) the inclusions are continuous with the cytoplasm, 2) all cytoplasmic organelles, such as the endoplasmic reticulum, the Golgi apparatus, and the secretory granules are found in the inclusions, 3) immunoreactivity of the intranuclear inclusion is the same as that of the cytoplasm. In conclusion, intranuclear cytoplasmic pseudoinclusions in pituitary adenomas occur frequently (70.3%) and are formed by cytoplasmic invagination. This study suggests that pituitary intranuclear inclusions caused by cytoplasmic invagination be called "intranuclear cytoplasmic pseudoinclusions".

Posttraumatic myositis ossificans (PTMO) is the most common form of myositis ossificans, but it rarely affects the hand. Due to the aggressive behavior of this unusual tumor, it is commonly misdiagnosed as malignancy or local infection. This report describes a case of PTMO of the hand in a 25-year-old women, and reviews the clinical, radiologic, and histologic characteristics. By understanding the disease characteristics and maturation process, physicians can avoid a misdiagnosis that may lead to functional impairment or improper treatment.