The incidence of bone tuberculosis is less than 5% of all tuberculosis cases. Furthermore, multifocal bone tuberculosis is uncommon, which rarely occurs without primary foci. It is difficult to diagnose, particularly if it is localized in both humeral heads. On the other hand, the isolated iliac bone tuberculosis is exceptional; it constitutes, also, a challenging diagnosis, which requires a high index of clinical suspicion and advanced investigations. Herein, we first report a case of multifocal tuberculosis of both humeral heads with no primary foci, and we secondarily report a case of isolated iliac bone tuberculosis. At last, however, the histological exam and polymerase chain reaction for the Mycobacterium tuberculosis complex are not always positives; they are mandatory as tests to ascertain the diagnosis.

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Schwannoma in the lower limb is extremely rare and only few cases were reported., they are often overlooked in the first diagnosis and often confused with other common lesions in this localization. Herein we report a 62 years old man who presented pain and paresthesia on the lateral aspect of the ankle since 3 months. The clinical and radiological finding prompting the patient to undergo surgery in which an excisional biopsy of the mass of the leg was realized. The post-operative was uneventful. Two weeks later, the histopathological analysis was in favor of schwannoma with a good result at the last follow up. At last, we emphasis that schwannoma should be considered as a possible diagnosis in patient with chronic ankle pain, particularly if all other injury has been ruled out which can raises the awareness about this tumor.