Related Experiment Video
Updated: May 1, 2026
07:43
Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
Published on: January 17, 2018
18.5K
Primary posterior mediastinum hydatid cyst.
Mughis Uddin Ahmed1, Ahmed Fathi Eid2, Nadia Al-Hawashim3
1Department of Microbiology, King Abdulaziz Hospital (NGHA) Al-Ahsa, Saudi Arabia.
Summary
Primary posterior mediastinal hydatid cysts are rare but serious in Mediterranean countries. Imaging and CT-guided aspiration confirmed a hydatid cyst, highlighting its importance in differential diagnosis.
Area of Science:
- Medical Imaging
- Parasitology
- Thoracic Surgery
Background:
- Primary posterior mediastinal hydatid cysts pose a significant health challenge, particularly in Mediterranean regions.
- Accurate diagnosis is crucial for effective management of mediastinal masses.
Observation:
- A 46-year-old female presented with a posterior mediastinal cyst.
- Initial imaging (CT and MRI) suggested possibilities including hydatid, bronchogenic, or neuroenteric cysts.
Findings:
- CT-guided aspiration using an 18-gauge needle definitively identified hydatid sand.
- This confirmed the diagnosis of a primary posterior mediastinal hydatid cyst.
Implications:
- This case underscores the importance of considering hydatid cysts in the differential diagnosis of posterior mediastinal masses, even when rare.
- Early and accurate diagnosis through imaging and aspiration is vital for patient outcomes.
Related Concept Videos
01:25Hiatal Hernia
86
A hiatal hernia is the abnormal protrusion of the stomach or other abdominal organs through the esophageal hiatus of the diaphragm into the thoracic cavity.Normally, the gastroesophageal junction (GEJ) lies below the diaphragm and is supported by the phrenoesophageal membrane, the diaphragmatic crura, and connective tissues. Weakening of these structures—due to aging, congenital defects like a short esophagus, or increased intra-abdominal pressure from coughing, obesity, pregnancy, or...
86
01:29Cardiomyopathy III: Hypertrophic Cardiomyopathy
805
Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
805
01:19Appendicitis
29
Appendicitis is an acute inflammatory condition of the vermiform appendix, most commonly caused by obstruction of its lumen. The appendix is a narrow, blind-ended pouch that extends from the cecum, making it particularly prone to obstruction. Causes include fecaliths, lymphoid hyperplasia (often after viral infections), parasites, tumors, or foreign bodies. This obstruction initiates a cascade of pathological changes.Luminal Obstruction and Early InflammationAfter obstruction, normal mucosal...
29
01:22Mitral Stenosis I: Introduction
1.8K
Mitral Valve Stenosis (MVS) is a heart condition where the mitral valve narrows, impeding blood circulation from the left atrium to the left ventricle. The etiology and pathophysiology of this condition are multifaceted, leading to a cascade of cardiovascular complications.Causes of Mitral Valve StenosisRheumatic Heart Disease: It is the main cause of mitral valve stenosis, particularly in developing nations. This condition arises from rheumatic fever, an inflammatory illness resulting from...
1.8K
01:15Development of the Lymphatic System
2.8K
The development of lymphatic tissues and vessels in embryonic life begins around the fifth week. These structures originate from the mesoderm layer, with lymph sacs emerging from developing veins.
The first lymph sacs to form are the paired jugular lymph sacs located at the junction of the internal jugular and subclavian veins. From these sacs, lymphatic capillary plexuses extend to the thorax, upper limbs, neck, and head, eventually forming lymphatic vessels. Each jugular lymph sac maintains a...
The first lymph sacs to form are the paired jugular lymph sacs located at the junction of the internal jugular and subclavian veins. From these sacs, lymphatic capillary plexuses extend to the thorax, upper limbs, neck, and head, eventually forming lymphatic vessels. Each jugular lymph sac maintains a...
2.8K
01:17The Pituitary Gland
13.0K
The pituitary is a small endocrine organ in the sphenoid bone under the hypothalamus. Primarily, the pituitary in adults has two distinct anatomical and functional regions— the anterior and posterior lobes. During human fetal development, a third pituitary gland region called the pars intermedia atrophies and disappears. However, some of its cells migrate and exist adjacent to the anterior pituitary in adults.
13.0K