purpose : fine needle aspiration (fna) cytologic findings of langerhans cell histiocytosis (lch) have been well described, but using this method in the diagnosis of orbital lesions is a recent experience. we hereby report two cases of orbital bone lch diagnosed by fna that later was confirmed by routine h&e; histopathology and immunohistochemistry (ihc) methods. case reports : the first case wa...

follicular thyroid carcinoma (ftc) is the second most common type of thyroid cancer after papillary carcinoma. it usually grows slowly and is clinically indolent; but rarely, its aggressive forms with distant metastases can occur. we report here an uncommon case of bilateral orbital metastasis of ftc. a 70-year-old woman presented with bilateral exophtalmus and past medical history of thyroid n...

Massive globular clusters lose stars via internal and external processes. Internal processes include mainly two-body relaxation, while interactions with the Galactic tidal field. We perform a suite of N-body simulations such massive using three different direct-summation codes, exploring orbits particle numbers. By inspecting rate at which star's energy changes as it becomes energetically unbou...

background and objective: inflammatory pseudotumor  is a lesion composed of proliferating spindle cells with mixed inflammatory infiltrates. some authors have proposed the name inflammatory myofibroblastic tumor as a proper descriptive term rather than the vague inflammatory pseudotumor. the aim of this study was to verify the myofibroblastic origin of spindle cells in idiopathic orbital inflam...

intraocular metastatic tumors have been increasingly reported in the recent past. unlike choroidal metastasis, metastasis to retina is very rare and so far has been reported in very few case reports only. case presentation : a 56 year-old male who presented with a history of adenocarcinoma of the cecum and underwent lap colectomy for the primary cecal tumor, received adjuvant chemotherapy for a...

introduction penetration of a bicycle brake handle into the orbit is a rare and serious type of trauma. globe subluxation due to such trauma has not been previously reported. case presentation a 10-year-old girl presented after falling from a bicycle, which resulted in the handbrake penetrating her right upper eyelid. on examination, the globe was subluxated anteriorly, there was no light perce...

Abstract We present a detailed analysis of the behavior triaxial Schwarzschild orbit superposition method near axisymmetric limit. Orbit modeling is primary used to determine dynamical masses supermassive black holes ( M BH ) in nearby galaxies; however, prior studies have reported conflicting results when comparing outcome from codes with that code show order achieve (oblate) axisymmetry code,...