[Penetrating neck and facialinjury : arrow, an rare but still current etiology].

Penetrating neck and facial injuries are rare withonly a few cases reported in literature. Indeed, they are extremely rare in developed countries but remain relevant in our rural areas that are characterized by the recurrence of intertribal clashes. It was in thiscontextthatwereceivedtwo patients in the department of ENT of Niamey National Hospital.

[Harlequin syndrome in a melanoderm patient].

Introduction: Harlequin's syndrome is a neurological disorder due to a dysfunction of the sympathetic innervation of the face. It has been rarely reported in the literature. The authors report one case occurring in a melanoderm patient.

[Sinonasal mucormycosis revealed by a necrotic velar ulceration].

Introduction: Mucormycosis is a deep mycosis which has been spreading out in recent years. It is still poorly understood and poorly described in sub-Saharan Africa. The authors report a case of sinonasal localization, of fatal evolution and late diagnosis in a young child.