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Abstract Background Fractures of the clavicle are common injuries, which often require reduction and internal fixation. Although Kirschner pins have been commonly used to treat these fractures with good results, migration of these devices may result in severe internal lesions. Case presentation We report herein the case of 61-year-old man, who presented for intrapulmonary migration of a Kirschner pin, 25 years after closed reduction and fixation of a clavicle fracture. Conclusion Migration of an osteosynthesis pin can be lethal. Patients with osteosynthesis pins, should have a regular follow, until the removal of the wires.

Abstract Spindle cell hemangioma (SCH) is a benign vascular tumour, first identified by Weiss and Enzinger in 1986. Habitually, the SCH affects almost exclusively the dermis and subcutaneous tissues of distal extremities. So far, only 2 cases have been described in the lung. We describe herein the third case of SCH occurring in the lung in a 47 year‐old woman. The patient was successfully treated by right lower lobectomy. The histopathological and immunohistochemistry examination of the excised tumour leads to the definitive diagnosis. Our case is instructive by its different clinical and radiological presentation compared to the previous two cases.

Abstract Background Hydatid cyst (HC), the most parasitic disease of the lung, is still an important health problem in Tunisia. In this study, we reviewed our experience in a surgical management of 33 patients with giant pulmonary hydatid cyst (GPHC) (diameter ≥ 10 cm). Main body Between 1998 and 2019, a total of 33 patients with GPHC were operated in the Thoracic Surgery Department in Abderrahmane Mami Hospital. Seventeen were males (51.51) and 16 were females (48.48%). The median age was 33.9 years (range 7–83 years). The diameters of the cyst ranged between 10 and 20 cm (mean 13.15 cm). The most common symptoms were chest pain (63.63%) and cough (33.33%). Imaging showed a single GPHC in all cases. GPHC was intact in 75.75% cases and complicated in 24.25% cases. Posterolateral thoracotomy was performed in 27 cases (81.81%). For the residual cavity, parenchyma-saving procedures were performed in 54.54% and anatomical resection was performed in 45.46%. Morbidity was low, and no mortality was seen. Conclusion GPHC are considered more difficult to treat surgically than small cysts; parenchyma preserving should and could be the surgical method of choice with a good prognosis. The decision of anatomical pulmonary resection is taken in per-operative when conservative surgery is not possible.

Abstract Synovial sarcoma is a soft tissue sarcoma. Its occurrence as a primary mediastinal neoplasm is very rare. We report a case of mediastinal synovial sarcoma in a 14‐year‐old girl with exertive dyspnoea at presentation. On physical examination, there was a superior vena cava syndrome and café‐au‐lait spots. Chest X‐ray revealed a white left hemithorax with mediastinal deviation to the opposite side. Thoraco‐abdomino‐pelvic scanner showed a voluminous posterior cervico‐mediastinal tissue mass. Computed tomography (CT)‐guided biopsy of the mediastino‐pleural mass was performed. Histological examination reported fusocellular malignant mesenchymal proliferation. A complementary immunohistological study with a broad range of antibodies was performed with a high‐grade single‐phase spindle cell synovial sarcoma of the mediastinum. She presented a respiratory distress, did not respond to resuscitation, and died. Mediastinal synovial sarcoma is a rare tumour that is difficult to diagnose. Its slow progression and delay in diagnosis may lead to a fatal evolution.

Thyroid involvement with tuberculosis is an uncommon condition even in endemic countries. As its clinical presentation is not specific, diagnosis is often difficult and requires histopathological confirmation. Herein we report an observation of secondary tuberculosis of the thyroid gland in a woman with a type 2 diabetes mellitus and a primary hypothyroidism. She presented with a rapid enlargement of a preexisting goiter without compressive symptoms. The imaging exams showed a voluminous plunging multinodular thyroid gland and multiple bilateral lung nodules. Malignancy was suspected and the patient underwent a total thyroidectomy and a lung biopsy. Histopathological examination revealed multiple tuberculous foci involving both the thyroid gland and the lungs.

Wegener's granulomatosis (WG) is the most frequent antineutrophil cytoplasmic antibody (ANCA)–associated vasculitis. It affects mainly the upper airways, lungs, and kidneys. Two forms are identified: systemic and limited. We describe three cases of limited WG diagnosed during a 7-year period. Our aim is to report three localized forms of WG and to put emphasis on the necessity of differentiating localized from systemic forms because of their different prognoses and manner of management. Our study contained two men and one woman with a mean age of 43 years. All our patients were symptomatic and presented with nonspecific respiratory signs. The cANCA were positive in all patients. The imaging findings consisted of cavitary masses. The diagnosis was based on surgical lung biopsy in all cases. All patients were put on cyclophosphamide and prednisolone. Only one patient presented with renal complications after a 2-year follow-up period. The two other patients did not present complications after, respectively, 1 month and 1 year of follow-up. These case reports put emphasis on a rare form of WG, the limited form. The low number of patients, due to the rarity of this disease, does not allow us to delineate the characteristics and the differences between this form and the systemic form, but we highlight the necessity of future investigations in order to explore the pathogenesis, therapeutic, and prognosis differences between these two subsets.

Introduction Thoracic solitary fibrous tumors (SFTs) are usually pleural-based lesions and diagnosed incidentally. The authors, hereby, report two cases of symptomatic SFT of the pleura with locally aggressive potential. Case 1 A 63-year-old male patient presented with chief complaints of dyspnea at rest and thoracic pain. Computed tomography scan revealed a mass of the right visceral pleura with multiloculated pleural effusion. Microscopic examination with immunostaining of the resected mass confirmed the diagnosis of malignant SFT. Local recurrence occurred after 5 months. Case 2 A 32-year-old patient had a massive tumor of the left hemithorax, invading the descending aorta and thoracic vertebrae, causing a shifting of the heart and mediastinum. A needle transcutaneous biopsy confirmed the diagnosis of SFT. Considering the respiratory failure, surgical treatment was preceded by a general preparation. The patient died few days before the operation owing to respiratory distress. Conclusion This paper sustains the heterogeneity of these tumors. SFT of the pleura could have malignant potential at first presentation or in a young patient. [ABSTRACT FROM AUTHOR]