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Related Concept Videos

Computed Tomography01:10

Computed Tomography

Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
Radiological Investigation II: MRI and Ventilation Perfusion Scan01:30

Radiological Investigation II: MRI and Ventilation Perfusion Scan

Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...

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Updated: Jun 7, 2026

Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
07:43

Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas

Published on: January 17, 2018

Complete unilateral maxillary sinus opacity in computed tomography.

Han-Ju Chen1, Huan-Sen Chen, Yen-Liang Chang

  • 1Department of Otolaryngology, Head and Neck Surgery, Cathay General Hospital, 280 Sec. 4 Jen-Ai Road, Taipei, Taiwan.

Journal of the Formosan Medical Association = Taiwan Yi Zhi
|October 26, 2010
PubMed
Summary
This summary is machine-generated.

Unilateral maxillary sinus opacity often presents as inflammation but can also indicate fungal disease or tumors. Accurate diagnosis requires thorough clinical evaluation and computed tomography (CT) scans.

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Last Updated: Jun 7, 2026

Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
07:43

Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas

Published on: January 17, 2018

Area of Science:

  • Otolaryngology
  • Radiology
  • Pathology

Background:

  • Unilateral maxillary sinus opacity is challenging to diagnose precisely.
  • Various conditions can cause this radiographic finding.

Purpose of the Study:

  • To detail pathological conditions causing unilateral maxillary sinus opacity.
  • To correlate clinical features with specific diagnoses.

Main Methods:

  • Retrospective review of 116 patients with unilateral maxillary sinus opacification from 2004-2008.
  • Analysis of preoperative computed tomography (CT) scans, clinical symptoms, physical examinations, and pathology results.

Main Results:

  • Chronic rhinosinusitis (52.6%) was most common, followed by fungus ball (29.3%), benign tumors (10.4%), and malignancy (5.1%).
  • Fungal sinusitis was prevalent in isolated maxillary opacification.
  • Nasal symptoms differed between inflammatory and neoplastic diseases; epistaxis and mass effect suggested malignancy.

Conclusions:

  • While often inflammatory, unilateral maxillary sinus opacity necessitates considering fungal sinusitis and neoplasms.
  • Comprehensive history, physical examination (including nasal endoscopy), and CT imaging are crucial for accurate diagnosis.