Extra-skeletal Ewing’s sarcoma is a rare soft tissue malignant neoplasm, morphologically indistinguishable from skeletal Ewing’s sarcoma. The usual sites of involvement are the soft tissues of para-vertebral region, chest wall, and lower extremity. Extra-skeletal Ewing’s sarcoma is rare in the head and neck region and very few cases are reported in the parotid gland. The cytological features of...

Clear cell sarcoma (CCS, malignant melanoma of soft parts) is a rare neoplasm accounting for 1% of all soft tissue sarcomas (1). Young adults between the ages of 20 and 40 are most commonly involved (1). CCS is intimately associated with or in a tendon, ligament, or aponeurosis. Suggestive features of diagnosis best seen on MR imaging include a mass having components not only surrounding but wi...

The diagnosis of soft tissues sarcomas by fine-needle aspiration biopsy (FNAB) is controversial and relatively underused. We believe that the lack of acceptance by many clinicians and pathologists may be related to several factors. First, in comparison with other forms of cancer, soft tissue sarcomas are rare, constituting less than 1% of all malignant neoplasms. As a consequence, most patholog...

INTRODUCTION Ganglioneuroma is a rare, benign, neuroblastic tumor arising mainly from the central or peripheral autonomic nervous system, especially the sympathetic system. The most affected anatomical sites are the posterior mediastinum, retroperitoneum, adrenal gland and head and neck soft tissue. In the current literature, reports of ganglioneuroma diagnosed by fine-needle aspiration and its...

epithelioid hemangioendothelioma (ehe) is a rare neoplasm of vascular origin which arises preferentially in soft tissue and bone, and rarely in the liver. its vascular nature is confirmed by positive staining for factor viii-related antigen and other endothelial cell markers (cd31, cd34) in addition to the pathologic characteristics of well-developed basal lamina, pinocytotic vesicles, and, mor...

objective: the aim of this study is to evaluate the effect of tissue composition on dose distribution in electron beam radiotherapy. methods : a siemens primus linear accelerator and a phantom were simulated using mcnpx monte carlo code. in a homogeneous cylindrical phantom, six types of soft tissue and three types of tissue-equivalent materials were investigated. the tissues included muscle (s...

Superficial acral fibromyxoma are rare soft tissue tumors predominantly involving hands and feet of adults. There are only a few reported cases of this benign neoplasm, but no FNAC diagnosis of this tumor is reported in the literature. A Forty-eight year old female presented with a 5 x 3.5 cm globular, firm swelling over the right fifth toe. Fine needle aspiration cytology (FNAC) of the lesion...

in this paper an automatic examination robot was developed to improve the process of cancer detection, tumor localization and geometrical shape diagnosis. a uniformly distributed compressive load was applied to the top tissue surface and the resultant mechanical stress was measured that was employed for the tumor diagnosis task. the experimental examinations were performed on the soft tissue of...