Related Experiment Video
Updated: Jun 21, 2026

Thoracoscopic Extended Right Middle Plus Lower Sleeve Lobectomy for Non-Small-Cell Lung Cancer
Published on: February 27, 2026
Primary pulmonary meningioma presenting with hemoptysis on exertion
Nobuhiro Izumi1, Noritoshi Nishiyama, Takashi Iwata
1Department of Thoracic Surgery, Osaka City University Hospital, Osaka, Japan.
Abstract:
An 18-year-old woman presented with hemoptysis during long-distant running. A chest computed tomographic scan revealed a well-demarcated, round-shaped, solitary mass (3.0 cm in diameter) in the left pulmonary hilum. The bleeding was getting more often and a left upper lobectomy was carried out to avoid critical airway bleeding. A solid proliferation of short spindle cells with a remarkable whorl pattern was demonstrated histologically. Immunohistochemical studies showed positive for vimentin and S-100, and focally positive for epithelial membrane antigen. Primary pulmonary meningioma was thus diagnosed. The patient is well without recurrent disease 15 months after surgery.
Related Concept Videos
Pneumothorax-II
Clinical Manifestations:
Pulmonary Tuberculosis III
The first classification is based on the development of the disease, and it includes the following categories:
Pulmonary Embolism I: Introduction
Pulmonary Embolism I: Introduction
Cryptococcal Meningitis
Pulmonary Tuberculosis I
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
