needle insertion is a minimally invasive technique in diagnosing and treating tumors. however, to perform a surgery accurately, the tissue should have minimum amount of displacement during needle insertion so that it reaches the target tissue. therefore, the tissue membrane has to move less to decrease rupturing under the membrane. in this study, the effect of different design parameters on dis...

background: persian gulf is a semi-closed environment which is affected by pollution ‎from heavy metals. entrance of heavy metals to the water column and binding to ‎sediment particles can affect the benthic organisms that can accumulate these ‎materials in their body. noticing this ability, mussels are considered as bio-monitoring ‎agents.‎ methods: the pearl oyster, pinctada radiate, and sedi...

recurrent dislocation is not common in small joints. this report presents a new case of chronic recurrent dislocation of proximal interphalangeal joint of the finger in which soft tissue injuries have a role in the dislocation. the patient was a 23 years old man who had referred to our center because of recurrent dislocation of proximal interphalangeal joint of his right ring finger during spor...

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 (ske...

Epithelioid hemangioendothelioma is an uncommon malignant vascular tumour usually involving soft tissue and rarely only skin. It is considered to be a borderline neoplasm between angiolymphoid hyperplasia with eosinophilia and an epithelioid angiosarcoma and is mostly found in adults with few cases reported in children. We herein report a case of ulcerated cutaneous epithelioid hemangioendothel...

Neuroblastoma is an uncommon malignant neoplasm that derives from neural crest progenitor cells that normally give rise to the sympathetic nervous system. It represents 8 to 10% of all extracranial tumors in childhood. The purpose of this paper is to report a case in which a mandibular soft tissue mass was the initial presenting sign of disseminated neuroblastoma in a 2-year-old child, and to d...

Epithelioid hemangioendothelioma was coined by Enzinger and Weiss in 1880 to define an intermediate group of vascular neoplasm.1 The tumor is composed of epithelioid or histiocytoid endothelial cells. It commonly occurs in lungs, liver, bone, and presents as a soft tissue mass. Intracranial occurrences are very rare and cavernous sinus is an unusual site. To the best of our knowledge, we found ...

Extramedullary plasmactyoma is the solitary, soft tissue form of plasma cell neoplasm but lack the defining features of medullary or multiple myeloma. The diagnosis is difficult to make in routine practice setting due to the morphological and immunohistochemical overlap with plasmablastic lymphoma. We report a case of plasmablastic extramedullary plasmacytoma in a 52-year-old in the mandibular ...

Objective: To report the case of a 20-year-old female patient with an unusual presentation soft nipple fibroma as well its surgical excision confirmation diagnosis by histopathology, also reviewing all cases so far published. Case details: Female, 20 years old, pedunculated, and painless lesion on left insidious growth since she was six old. Tangential histopathological examination were perform...

Ewing sarcoma (ES)/primitive neuroectodermal tumor (PNET) is a malignant small round blue cell neoplasm of presumed neuroectodermal origin that affects bones and soft tissue in children and young adults. Nearly 80% of the patients are younger than 20 years. The tumor cells characteristically express CD99 (MIC2 antigen), a glycoprotein localized on cell membrane. The defining feature of ES/PNET ...