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            [0] => Diagnostic difficulty of femoral hydatid cyst : a case report
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    [etablissement] => Array
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            [0] => Rabta hospital
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    [nom] => Array
        (
            [0] => khlif
        )

    [prenom] => Array
        (
            [0] => mohamed ali
        )

    [email] => Array
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            [0] => dalykhlif1@yahoo.fr
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            [0] => 27256830
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            [0] => 
 
Nom prénom / Name Surname: Mahjoubi Seifeddine
Email: seifeddinemahjoubi@gmail.com
Hôpital / Hospital: Rabta hospital

 
Nom prénom / Name Surname: Khlif Mohamed Ali
Email: dalykhlif1@yahoo.fr
Hôpital / Hospital: Rabta hospital

 
Nom prénom / Name Surname: Ouachani Atef
Email: oichaniatef@gmail.com
Hôpital / Hospital: Rabta hospital

 
Nom prénom / Name Surname: Ben Ayed Mehdi
Email: b.ayed.mehdi@gmail.com
Hôpital / Hospital: Rabta hospital

 
Nom prénom / Name Surname: Barsaoui Maher
Email: barsaoui.maher@yahoo.fr
Hôpital / Hospital: Rabta hospital

 
Nom prénom / Name Surname: Zitouna Khaled
Email: kh.zitouna@laposte.tn
Hôpital / Hospital: Rabta hospital

        )

    [mots_cles] => Array
        (
            [0] => osseous ecchinocosis;
diagnosis;
femur;

        )

    [event-id] => Array
        (
            [0] => 3663
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            [0] => 1
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    [user_email] => Array
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            [0] => dalykhlif1@yahoo.fr
        )

    [specialite] => Array
        (
            [0] => Chirurgie orthopédique et traumatologique
        )

    [pays] => Array
        (
            [0] => Tunisie
        )

    [texte_abs] => Array
        (
            [0] => E poster

Background : Osseous ecchinococcosis is uncommun, rendering its diagnosis challenging and confusing with other diseases such as bone tumors. This work aims to display the difficulties in diagnosing such condition

Observation : A 54-year-old farmer has been experiencing mixed mechanical and inflammatory pain in the left knee for 2 months. Clinical examination reveals a complete but painful range of motion of the knee. Standard radiography and MRI results show a heterogeneous osteolytic metaphyseal-diaphyseal distal image spanning a length of 33 cm, with medial periosteal reaction. Biopsy of the distal femoral metaphysis, performed under lateral crural approch, confirmed the diagnosis of osseous echinococcosis.

DIscussion : The atypical appearance of hydatid cyst on MRI added to the diagnosis challenge, particularly in presence of lytic bone lesions and periosteal reaction. This unusual presentation could easily be mistaken for other conditions such as primary or metastatic bone tumors, infection and even inflammatory bone diseases. 

Conclusion : This case underscores the importance of acknowledging the diagnostic difficulty associated with osseous echinococcosis, especially when interpreting MRI findings that may deviate from typical presentations. A holistic approach, including a detailed medical history, thorough clinical examination, and careful interpretation of imaging studies, is essential for achieving an accurate diagnosis and initiating appropriate treatment in a timely manner.
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