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Pneumothorax-I

Pneumothorax-I

A pneumothorax is a condition where air builds up in the space between the lung and the chest wall, causing the lung to collapse. This condition arises when air enters the space between the parietal and visceral pleura, disrupting the negative pressure essential for lung inflation. This can lead to a partial or complete collapse of the lung.
Pneumothorax can be even further classified as spontaneous, traumatic, and tension pneumothorax.

Pneumothorax-II

Pneumothorax-II

Pneumothorax is a medical condition defined by the buildup of air in the pleural space between the lungs and the chest wall. This accumulation of air can lead to partial or complete lung collapse, resulting in a range of clinical manifestations. Understanding the clinical presentation and effective management strategies is crucial for healthcare professionals in providing timely and appropriate care to individuals with pneumothorax.
Clinical Manifestations:

Torsion of Noncircular Members

Torsion of Noncircular Members

Circular shafts undergoing torsional stress maintain their cross-sectional integrity due to their axisymmetric nature. This symmetry ensures an even distribution of stress, allowing the shaft to withstand torsion without distorting. In contrast, square bars, lacking this axial symmetry, experience significant distortion across their cross-sections when subjected to torsion, with the exception of along their diagonals and at lines connecting midpoints. A detailed examination of a cubic element...

Torsional Pendulum

Torsional Pendulum

A torsional pendulum involves the oscillation of a rigid body in which the restoring force is provided by the torsion in the string from which the rigid body is suspended. Ideally, the string should be massless; practically, its mass is much smaller than the rigid body's mass and is neglected.
As long as the rigid body's angular displacement is small, its oscillation can be modeled as a linear angular oscillation. The amplitude of the oscillation is an angle. The role of mass is played...

Bending and Torsional Moments

Bending and Torsional Moments

Bending and torsional moments are two fundamental concepts in structural engineering. They play an important role in understanding the behavior of materials and structures under different loading conditions.
The reaction developed in a structural element when subjected to an external force causes the element to bend. When a structural element bends upwards, it creates compressive normal forces on the top and tensile normal forces on the bottom, resulting in a couple that determines the bending...

Lobes of the Cerebrum

Lobes of the Cerebrum

The cerebral cortex, a critical structure of the brain, is intricately divided into two hemispheres, each consisting of four distinct lobes: occipital, temporal, frontal, and parietal. These lobes function cooperatively to regulate various cognitive and sensory functions, forming the basis of our complex neural capabilities.
Frontal lobe
The frontal lobes, located behind the forehead, are the command center of our brain, controlling personality, intelligence, and voluntary muscle movements....

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Updated: Jan 26, 2026

Laparoscopic Left Hemihepatectomy Combined with Caudate Lobe Resection

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Published on: April 11, 2025

Left upper lobe torsion in pneumothorax.

Thoris Pan¹, Rakin H Choudhury², Tony Alias³

¹Division of Pulmonary and Critical Care Medicine, Baylor University Medical CenterDallasTexas.

Proceedings (Baylor University. Medical Center)

|April 6, 2019

Summary

This summary is machine-generated.

A rare case of left upper lobe torsion occurred after a pneumothorax complication from central venous catheter placement. Prompt diagnosis via imaging and bronchoscopy is crucial for this life-threatening condition.

Keywords:

Chronic obstructive pulmonary disease lung torsion pneumothorax

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Area of Science:

Thoracic Surgery
Pulmonary Medicine
Diagnostic Imaging

Background:

Subclavian venous access is a common procedure in neurosurgery.
Pneumothorax is a known complication of central venous catheterization.
Persistent radiographic abnormalities after pneumothorax management warrant further investigation.

Observation:

A patient developed a left upper lobe torsion after a pneumothorax secondary to subclavian venous access.
Chest imaging revealed concerning signs of lobar torsion despite appropriate pneumothorax treatment.
Fiberoptic bronchoscopy demonstrated significant obstruction of the left upper lobe bronchus.

Findings:

Computed tomography and bronchoscopy findings confirmed left upper lobe torsion.
Surgical exploration (thoracotomy) validated the diagnosis of lobar torsion.
This case highlights a rare but serious complication following central venous access.

Implications:

Lobar torsion should be considered in the differential diagnosis of unexplained persistent chest imaging abnormalities post-procedure.
Early recognition and intervention are critical for managing this potentially fatal condition.
This emphasizes the importance of a comprehensive diagnostic approach for procedural complications.