Amit Tibb

Bronchial leiomyoma, a case report and review of literature

A 44 year old male former smoker from Ecuador presented with productive cough for 3 weeks, positive tuberculin skin test, 40 lbs weight loss and right lower lobe collapse. He denied wheezing or hemoptysis. He was treated with antibiotics and ruled out for tuberculosis with negative sputum smear. Bronchoscopy showed an endobronchial lesion at the distal end of bronchus intermedius as cause of the collapse. Endobronchial biopsy of the lesion revealed an endobronchial leiomyoma, a rare cause of endobronchial tumor. The patient underwent bilobectomy as definite therapy for the leiomyoma due to its large size and possible extra-luminal extension, which made it not amenable to bronchoscopic resection or bronchoplasty. Differential diagnoses of endobronchial lesions are discussed along with clinical, radiographic, pathologic characteristics and various treatment modalities for endobronchial leiomyomas.

Primary salivary type lung tumor: Mucoepidermoid carcinoma

Primary salivary type lung cancer are extremely rare intrathoracic malignancies. Mucoepidermoid tumor is one of the salivary gland tumor which originates from submucosal glands of tracheobronchial tree. These are very slow growing low grade malignant tumors. Surgery is the mainstay of treatment and rarely requires adjuvant therapy. In this case report, we describe a case of a young male who presented with cough and hemoptysis. On further investigation he was found to have mucoepidermoid tumor originating from the left bronchus.

A vicious cycle of acute catecholamine cardiomyopathy and circulatory collapse secondary to pheochromocytoma

Acute catecholamine cardiomyopathy is an uncommon, life-threatening manifestation of pheochromocytoma. The massive release of catecholamines from the adrenal medulla and their toxic effects on the coronary vessels and the cardiac myocytes play a significant role in the pathogenesis of cardiomyopathy in patients with pheochromocytoma. Severe manifestations, such as acute catecholamine cardiomyopathy, may be the initial presentation, especially in unsuspected and untreated pheochromocytoma cases. The clinical course of catecholamine-induced cardiomyopathy is unpredictable as patients may rapidly deteriorate into circulatory collapse and multisystem crisis. We report a case of a 25-year-old man who presented with catecholamine-induced cardiomyopathy.