purpose: to report a case of free floating pyogenic granuloma within the lacrimal sac. case report: a 13 month old infant with unresolving dacryocystitis and history of two times failed probing and once failed turbinate fracture was scheduled for dacryocystorhinostomy (dcr). a free floating red mass was removed from the sac. histopathologic examination confirmed a diagnosis of pyogenic granulom...

Despite the early description of Spirillum volutans Ehrenberg in 1832, attempts by various investigators to grow this organism in pure culture have been unsuccessful (Williams and Rittenberg, Intern. Bull. Bacteriol. Nomencl. Taxonom. 7:49, 1957); however, by a most ingenious dialysis sac technique, Rittenberg and Rittenberg (Arch. Mikrobiol. 42:138, 1962) were able to isolate the Pringsheim st...

Treatment of bifurcation intracranial aneurysms is technically challenging. Sometimes it is necessary to pass a microcatheter through the aneurysm sac to navigate the microcatheter to a branch originating from the aneurysm sac. A 56-year-old male patient was treated for an incidental middle cerebral artery aneurysm. One branch originated from the medial part of the aneurysm sac, therefore stent...

In extra-capsular extraction of cataract in which the central portion of the anterior capsule is removed, or in injury of the lens, or in discission operations in which the anterior capsule is torn and the central portion of the lens substance is penetrated and becomes absorbed, a greater part of the capsule sac remains intact. According to Wessely (1910), when the central part of the anterior ...

Endolymphatic sac tumours (ELST) are aggressive papillary tumours of the temporal bone. The name was finally determined after the endolymphatic sac was determined as the site of their origin. They should be considered in patients with tumours eroding the petrous part of the temporal bone, extending to the cerebellopontine angle or other adjacent structures. These very rare tumours in the genera...

introduction: radioiodine therapy is an effective method for treating thyroid cancer carcinoma, but it has some affects on normal tissues, hence dosimetry of vital organs are important to weigh the risks and benefits of this method. the aim of this study is to measure the absorbed doses of important organs by mcnp (monte carlo n particle) simulation and comparing the results of different method...