Aneurysmal bone cyst is a non-neoplastic lesion consisting of blood filled sinusoidal spaces that expand from the affected bone. The most common locations of aneurysmal bone cysts are the metaphysis of long bones, followed by flat bones. Only 2% of all are found in the head and neck area, with mandible and maxilla being the most frequent sites involved, involvement of the ethmoidal bone is extremely rare. Their occurrence on a pre-existing bone lesion is described. Imaging features may assist in diagnosis by demonstrating blood-fluid levels, which are a characteristic finding in these lesions. We present computed tomography and magnetic resonance imaging findings of aneurysmal bone cyst of the ethmoid sinus on fibrous dysplasia in a 12-year-old female.
BackgroundCervical thymic cysts are uncommon lesions, rarely considered in the differential diagnosis of neck cysts in children.Case presentationWe report a rare case of multiloculated thymic cyst in an 8-year-old boy on the right side of the neck. Perioperative diagnosis was a cystic hygroma. Macroscopic examination showed a cystic mass measuring 6.5 cm in total length. Histopathology of the excised specimen revealed thymic tissue with prominent Hassall’s corpuscles associated with multiloculated cyst. The cyst wall is bordered by a flattened or multilayered epithelium, often abraded.ConclusionThis case is presented here for its rarity and should be included in the differential diagnosis of neck masses in children. So, it’s a lesion to be well aware of, particularly by pathologists.
Introduction.
Saprochaete capitata is an emerging opportunistic fungus that is responsible for an uncommon mycosis known as geotrichosis, mainly reported in patients with haematological malignancies. It is a life-threatening condition associated with a high mortality rate of over 52 %. S. capitata may affect any organ, with a predilection for the lungs.
Case presentation. Here we report a case of pulmonary geotrichosis in a neutropenic HIV-infected patient with a prior history of treated tuberculosis. The main risk factor for pulmonary geotrichosis is profound and prolonged neutropenia. To our knowledge, this is the first reported case of S. capitata infection occurring on top of probable active miliary tuberculosis.
Conclusion. The clinical and radiological features are non-specific and similar to those of other pulmonary fungal diseases, hence the importance of mycological examination to confirm the diagnosis. Through this report, we urge clinicians to vigilantly consider S. capitata as an aetiological agent in the differential diagnosis of fungal infections in HIV-infected individuals and to routinely screen for associated infections.
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