ABSTRACT
Pneumatization of the crista galli is a recognized incidental finding on computed tomography (CT), usually with little relevance to the clinical picture. There are, however, notable exceptions: congenital midline nasal defects including nasal dermoids have been seen to track through or near the crista galli. Mucocele development has also been seen. This study aimed to evaluate the variation in crista galli morphology and pneumatization and assess whether specific morphologies occur. A retrospective observational study was undertaken between November 2007 and January 2008. Using coronal and axial reconstructed CT views, images of the head in the region of the paranasal sinuses were assessed. Variations in the crista galli were classified according to their position relative to the cribriform plate and to the degree of pneumatization. Computed tomography findings of the morphology of the crista galli in 99 patients were reviewed and a classification system derived from the findings. Three variations of the position of the base of the crista galli were defined. In 28.3% of subjects the base of the crista galli did not extend below the level of the cribriform plate. In 63.6%, the crista galli extended less than 50% of its height below the cribriform plate and in 8.1% of the scans the crista galli extended more than 50% of its height below the cribriform plate. Pneumatization was noticed in 14.1% of the scans. Our results demonstrate the variation that occurs in the morphology and pneumatization of the crista galli. We hope this knowledge might be of help in preoperative planning of surgical approaches to sites of disease involving the crista galli.
Subject(s)
Ethmoid Bone/anatomy & histology , Imaging, Three-Dimensional , Paranasal Sinuses/anatomy & histology , Tomography, X-Ray Computed/methods , Adolescent , Adult , Aged , Aged, 80 and over , Child , Ethmoid Bone/diagnostic imaging , Female , Humans , Male , Middle Aged , Paranasal Sinuses/diagnostic imaging , Retrospective Studies , Young AdultABSTRACT
Dacryocystitis is an infection of the lacrimal sac that is usually caused by obstruction of the nasolacrimal duct. We describe a case of iatrogenic dacryocystitis that occurred secondary to the presence of an impacted piece of a metallic dilator in the lacrimal apparatus. The foreign body was detected on dacryocystography and removed during dacryocystorhinostomy. The patient recovered uneventfully.
Subject(s)
Dacryocystitis/diagnostic imaging , Dacryocystorhinostomy/methods , Foreign Bodies/diagnostic imaging , Adult , Dacryocystitis/complications , Dacryocystitis/surgery , Dacryocystorhinostomy/adverse effects , Dilatation/instrumentation , Female , Foreign Bodies/complications , Humans , Iatrogenic Disease , Lacrimal Duct Obstruction/complications , Tomography, X-Ray Computed , Treatment OutcomeABSTRACT
Oncocytic lesions of the larynx are rare. When they have occurred, their presentation has been varied; these tumors may be completely asymptomatic and discovered incidentally, but more commonly they present with voice alteration. We report a case of an oncocytic cyst in a patient who presented with an acute onset of stridor. We also discuss the clinical manifestations and management of laryngeal oncocytic cyst and its relevant pathologic features.
Subject(s)
Cysts/pathology , Laryngeal Neoplasms/pathology , Aged , Cysts/complications , Cysts/surgery , Diagnosis, Differential , Humans , Laryngeal Neoplasms/surgery , Laryngoscopy , Male , Respiratory Sounds/etiology , Treatment OutcomeABSTRACT
A case of maxillary frontal process fracture complicating an acute endonasal dacryocystorhinostomy is presented. The management of this previously unrecorded complication and the corrective procedure that resulted in both patient and clinician satisfaction is described.
