Posterior penetrating injury of the orbit with retained foreign body

Intraorbital foreign body: A rifle bullet removed 20 years after the accident

INTRODUCTION

Trauma of the orbit and eyeball is common, but intraorbital bullet is a relatively rare event.

CLINICAL CASES

The authors report the management of a patient with chorioretinitis sclopetaria secondary to a gunshot wound twenty years previously.

DISCUSSION

The clinical, diagnostic and therapeutic aspects of this unusual case of intraorbital foreign body are discussed.

[Diagnosis and therapeutic management of an intraorbital organic foreign body]

INTRODUCTION

Orbital organic foreign bodies are rare and can present different clinical features. The objective of this report is to show the danger of this type of foreign body, present the imaging data, and suggest a diagnostic approach and therapeutic management. We describe three cases of orbital organic foreign bodies with three different clinical presentations.

CASE REPORTS

The first case was a 43-year-old male complaining of a chronic cutaneous fistula of the inferior right eyelid lasting 4 months after an orbital trauma with a wooden object. Two surgeries were necessary to extract the foreign bodies. In the second case, a 37-year-old female with post-traumatic ptosis after a bicycle accident several months before, the imaging exams revealed a fracture of the left orbital ceiling and a superior extraconical foreign body that was removed by a neurosurgery approach. The third case, a 69-year-old male with a right orbit abscess following a trauma with a tree branch had a persistent right orbit inflammation lasting 4 months despite two drainage surgeries and an extraction of an orbital organic foreign body. A third surgery was necessary to completely extract the foreign bodies.

DISCUSSION/CONCLUSION

Detecting an orbital organic foreign body is sometimes difficult, especially when the clinical history is unclear, the ophthalmologic exam reveals no abnormalities, or if the patient is referred to the hospital several months after the traumatic event. Orbital organic foreign bodies can lead to potentially serious orbital or intracranial complications. Computed tomography and orbital ultrasound sometimes do not yield an evocative pattern: for instance, in computed tomography, the low density of wood can be misdiagnosed as air. On the other hand, these foreign bodies can persist in the orbit after several surgical explorations because they can easily break or migrate. Magnetic resonance imaging is useful when an orbital organic foreign body is suspected, but the analysis is easier when clinical data are suggestive.

[Foreign body in the orbital cone: case report]

Orbital injuries may be associated with the presence of foreign bodies in which long retention leads to damages such as loss of vision or cerebral abscess. We present the case of a 21-year-old male patient that developed ptosis, limitation of movements and an inflammatory reaction in the right eye after being hit by a tree branch. A CT scan of the orbits revealed an increased density in the right orbital cone. After the neurosurgical approach for the removal of the foreign body, a wooden fragment measuring 2.0x0.3 cm, the patient had a good outcome without visual deficits, ptosis regression and resolution of the inflammatory process. The postoperative CT scan didn't identify any remaining foreign body fragment. This case calls attention to the fact that the wooden splinter presented on CT scan with high density (136 HU) two months after the trauma and was removed by a supraorbital craniotomy.

Clinical features and management of intraorbital foreign bodies

PURPOSE

To review the clinical features and management of patients with intraorbital foreign bodies.

DESIGN

Noncomparative interventional case series.

PATIENTS AND METHOD

Forty patients seen at two regional orbital surgery departments with intraorbital foreign bodies were reviewed.

MAIN OUTCOME MEASURES

Visual acuity, surgical interventions, and complications.

RESULTS

Seventy-three percent of patients were younger than 30 years old. There were 22 metallic, inorganic; 5 nonmetallic, inorganic; and 13 organic intraorbital foreign bodies (IOrbFb) in this series. Thirty patients were seen at the time of injury, and 10 patients were seen in a delayed setting with orbital complications. Thirty-four patients had surgical removal of their IOrbFb either because of complications or easy surgical access. Six patients had no surgery because of posteriorly located inorganic foreign bodies. Thirteen patients had resultant blind eyes; 12 of these were blind from the initial trauma.

CONCLUSIONS

Loss of vision in conjunction with IOrbFbs is usually a result of the initial trauma. All patients should have antibiotic therapy because of the high incidence of secondary orbital infections. Computed tomography is the best initial mode of imaging. Surgical removal is indicated for all organic IOrbFbs. Inorganic IOrbFbs should be removed if causing complications or if located anteriorly after discussion of potential surgical complications with the patient. Posteriorly located inorganic IOrbFbs should be left alone, unless they are causing significant orbital complications.

Occult penetrating orbital trauma

The case of a 25-year-old male college student who presented to the emergency department with uniocular blindness is described. Initially, the injury was thought to be secondary to blunt orbital trauma. Further investigation showed an occult gunshot wound to the orbit. The diagnosis and management of penetrating orbital trauma are discussed.