Search Results for mesenchymal

... other and to adrenal cortical neoplasms. Mesenchymal Tumors Myelolipoma. Myelolipomas are benign tumor-like lesions consisting of mature adipose tissue admixed in varying proportions with tri-lineage hematopoietic elements. These tumors are classified as mesenchymal neoplasms in the 2017 World Health...

... osteosarcoma, and mesenchymal chondrosarcoma. Patient age, tumor location, and additional clinical information usually narrow this differential diagnosis and a well-chosen panel of immunohistochemical markers almost always results in complete resolution of differential diagnostic uncertainty. NBL and GNBL show...

....” This term is most likely a misnomer for small, partially hyalinized spindle cell proliferations in the adrenal cortex that resemble mesenchymal cells of ovarian stroma, thus prompting the designation ovarian thecal metaplasia. The lesions are often wedge-shaped, attached to the adrenal capsule, and may...

... A: The almost entirely spindle cell composition of this paraganglioma raises the possibility of mesenchymal and other spindle cell neoplasms. B: Reticulin stain highlights the spindle cell pattern. ABDOMINAL PARAGANGLIOMA Figure 9-25 ABDOMINAL PARAGANGLIOMA This tumor is composed of monomorphic cells...

..., mycobacteria (tuberculosis or leprosy), and parasites, as well as neoplasms such as primary cutaneous malignancies (epithelial, hematolymphoid, and mesenchymal tumors, including lymphoma and Kaposi sarcoma) and skin metastases. The most frequently implicated fungal pathogens in this neglected tropical disease...

... MYOFIBROBLASTOMA SOLITARY FIBROUS TUMOR INFLAMMATORY MYOFIBROBLASTIC TUMOR PSEUDOANGIOMATOUS STROMAL HYPERPLASIA DESMOID FIBROMATOSIS NODULAR FASCIITIS Angiosarcoma VASCULAR LESIONS Benign Vascular Lesions Atypical Vascular Lesions OTHER MESENCHYMAL LESIONS OF THE BREAST SCAR Scar should...

... of a giant CMN that contains a pigmented nodule. B: The pigmented nodule is composed of large epithelioid melanocytes and many melanophages in a fibrous stroma. PN WITH MESENCHYMAL FEATURES Figure 2-19 PN WITH MESENCHYMAL FEATURES A: An amelanotic nodule is present within a CMN. B: The nodule...

... Mesenchymal Tumors Many other benign and malignant mesenchymal tumors have been described in the ovary, mostly as individual case reports ( 1 ). The basis for diagnosis at the ovarian site is identical to that at other sites. Before establishing the diagnosis, it is essential to exclude the possibility...

... to melanocytic differentiation antigens, as well as epithelial, lymphoid, and mesenchymal markers, may be necessary for a precise diagnosis. Even when the diagnosis of metastatic melanoma is certain, immunohistochemistry may also be helpful for assessing treatment options, such by performing immunohistochemistry...

... metaplastic carcinoma. METAPLASTIC CARCINOMA WITH HETEROLOGOUS MESENCHYMAL ELEMENTS Figure 8-62 METAPLASTIC CARCINOMA WITH HETEROLOGOUS MESENCHYMAL ELEMENTS In addition to the malignant spindle cells, this tumor has areas of osseous differentiation. METAPLASTIC CARCINOMA WITH HETEROLOGOUS MESENCHYMAL...

...: A large anterior septal mass distorts the contours of the right and left ventricles (yellow arrow) (RV and LV, respectively). Right: On short-axis view, HMCM manifests as an ill-defined area of tan-white tissue (black asterisk), enlarging the septum into the right and left ventricles. MESENCHYMAL CARDIAC...

... these as mesenchymal cells, and not misinterpret them as infiltrating carcinoma. MICROARCHITECTURE OF NORMAL ADULT FEMALE BREAST TISSUE Figure 1-1 MICROARCHITECTURE OF NORMAL ADULT FEMALE BREAST TISSUE A portion of an extralobular duct (arrow), terminal duct, and lobules, in turn composed of acini, is seen. ACINI...

... of both epithelial and myoepithelial cells embedded in a myxoid or, less commonly, a cartilaginous matrix. The degree of cellularity may vary, but most cases are on the hypocellular end of the spectrum. Distinction from metaplastic carcinoma with heterologous mesenchymal differentiation is a major...

...   M , et al . Single-center experience with intimal sarcoma, an ultra-orphan, commonly fatal mesenchymal malignancy . Oncol Res Treat   2017 ; 40 : 353 - 9 . 4. Blackmon   SH , Reardon   MJ . Pulmonary artery sarcoma . Methodist Debakey Cardiovasc J   2010 ; 6 : 38 - 43 . 5...