A rare and challenging case of intrapericardial hydatidosis.

BACKGROUND: Hydatid cysts are most frequently located in the liver and lungs and very rarely can be found in the pericardium. Diagnosis and treatment are quite challenging, as the disease can present itself in many forms depending to the location and the complications that it might cause. CASE PRESENTATION: A 22-year-old man presented to our hospital with ongoing dry cough for more than 1 month prior to admission. Other symptoms included chest pain, fatigue, low grade fever, and night sweats, which have worsened in the past 2 weeks. Physical examination revealed normal respiratory and heart function. Chest X-ray demonstrated mediastinal enlargement and left pleural effusion. Contrast-enhanced computed tomography images showed a walled cystic mass lesion measuring up to 56 × 50 mm in close proximity to the upper left atrium, ascending aorta and pulmonary artery, potentially localized in the pericardium, with a 10 mm endoatrial filling defect, findings were compatible with hydatid cyst, left pleural effusion and peripheral pulmonary upper left lobe consolidation. Cardiac involvement was excluded on magnetic resonance imaging and trans-esophageal ultrasound. The patient underwent fine needle aspiration of the affected lung and thoracocentesis. No malignancy was found, meanwhile the biopsy confirmed the presence of pulmonary infarction. In view of the imaging findings were highly suspicious of a hydatid cyst, we performed a test of antibody titers that was negative. The patient underwent left anterolateral thoracotomy, and after the opening of the pericardium, a cystic mass of 5 cm in diameter was found next to the left atrium and in close proximity with the left pulmonary veins. The content of the cyst was completely removed after the surgical area was isolated with gauze impregnated with hypertonic solution (NaCl 10%). The mass resulted to be an echinococcal cyst with multiple daughter cysts within it that did not penetrate/involve (perforate) the cardiac wall. CONCLUSION: Pericardial echinococcosis is a very rare pathology in which a high expertise multidisciplinary approach is required. The compression mass effect caused by the cyst can lead to complications, such as in our case where the pulmonary vein was compressed, leading to pulmonary infarction. The value of radiology studies and transoesophageal ultrasound are very important in the diagnosis. Surgery in these cases is always recommended, but preferred surgical approach is questionable. In cases such as ours, we recommend anterolateral thoracotomy.

Intrapericardial gossypiboma found 14 years after coronary artery bypass grafting.

BACKGROUND: Foreign body left after surgery surrounded by a foreign body reaction otherwise known as gossypiboma, have been first described in 1884. Although it occurs rarely, it can lead to various complications which include adhesions, abscess formation and related complications. Intrathoracic gossypiboma is a rare but serious consequence of negligence, mainly during abdominal and cardiothoracic surgery that can lead to severe medical consequences. This paper aims to raise awareness among surgeons and nurses in the operating room to prevent such errors and future complications. CASE PRESENTATION: A patient with a history of coronary arterial bypass grafting performed 14 years ago, presented with shortness of breath and dry cough. A chest X-ray revealed a large mass in the left hemithorax. The chest CT demonstrated the presence of a heterogeneous density mass of 11 cm and smooth edges in the middle mediastinum, next to the heart and partially intrapericardial. Because clinical and radiologic evidence revealed presence of a mass, we did proceed with CT guided FNA of the mass. The cytology findings confirmed an inflammatory lesion. Based on patient symptomatology and the evidence of a mass, allegedly compressing the cardiopulmonary structures in vicinity, we performed surgical exploration. An old and degraded piece of surgical swap was found and removed through an anterolateral left thoracotomy. The post-operative course was excellent. CONCLUSIONS: Forgetting surgical swaps during surgery is a medical fault. To avoid them, surgical units should design and implement a surgical inventory process to account for surgical instruments or surgical swaps. Failure to make a proper diagnosis of cases such as these can lead to further health complications in these patients. The iatrogenic foreign material seen as a mass in the radiologic films had not been previously noticed by other health professionals although the patient had undergone X-ray and cardiac ultrasound examinations in the 14 years following coronary bypass surgery. Once the causative agent was identified and removed the patient returned to normal activity.