- •Preface
- •Contents
- •Contributors
- •1 Primary Orbital Cancers in Adults
- •1.1 Lymphoproliferative Disorders
- •1.1.1 Presenting Signs and Symptoms, Histopathologic and Molecular Genetic Characteristics, and Diagnosis
- •1.1.2 Treatment
- •1.1.3 Follow-up
- •1.2 Mesenchymal Tumors
- •1.2.1 Fibrous Histiocytoma
- •1.2.2 Solitary Fibrous Tumor
- •1.2.3 Hemangiopericytoma
- •1.2.4 Other Mesenchymal Tumors
- •1.3 Lacrimal Gland Tumors
- •References
- •2 Nonmalignant Tumors of the Orbit
- •2.1 Presentation
- •2.2 Cystic Lesions
- •2.3 Vascular Tumors
- •2.4 Lymphoproliferative Masses
- •2.6 Mesenchymal Tumors
- •2.7 Neurogenic Tumors
- •2.8 Lacrimal Gland Tumors
- •References
- •3 Pediatric Orbital Tumors
- •3.1 Introduction
- •3.2 Cystic Lesions
- •3.2.1 Dermoid Cyst
- •3.2.1.1 Clinical Presentation
- •3.2.1.2 Imaging
- •3.2.1.3 Histopathology
- •3.2.1.4 Treatment
- •3.2.1.5 Prognosis
- •3.2.2 Teratoma
- •3.2.2.1 Clinical Presentation
- •3.2.2.2 Imaging
- •3.2.2.3 Histopathology
- •3.2.2.4 Treatment
- •3.2.2.5 Prognosis
- •3.3 Vascular Tumors
- •3.3.1 Capillary Hemangioma
- •3.3.1.1 Clinical Presentation
- •3.3.1.2 Imaging
- •3.3.1.3 Histopathology
- •3.3.1.4 Treatment
- •3.3.1.5 Prognosis
- •3.3.2 Lymphangioma
- •3.3.2.1 Clinical Presentation
- •3.3.2.2 Imaging
- •3.3.2.3 Histopathology
- •3.3.2.4 Treatment
- •3.3.2.5 Prognosis
- •3.4 Histiocytic Lesions
- •3.4.1 Eosinophilic Granuloma
- •3.4.1.1 Clinical Presentation
- •3.4.1.2 Imaging
- •3.4.1.3 Histopathology
- •3.4.1.4 Treatment
- •3.4.1.5 Prognosis
- •3.5 Neural Tumors
- •3.5.1 Optic Nerve Glioma
- •3.5.1.1 Clinical Presentation
- •3.5.1.2 Imaging
- •3.5.1.3 Histopathology
- •3.5.1.4 Treatment
- •3.5.1.5 Prognosis
- •3.5.2.1 Clinical Presentation
- •3.5.2.2 Imaging
- •3.5.2.3 Histopathology
- •3.5.2.4 Treatment
- •3.5.2.5 Prognosis
- •3.6 Malignant Lesions
- •3.6.1 Ewing Sarcoma
- •3.6.1.1 Clinical Presentation
- •3.6.1.2 Imaging
- •3.6.1.3 Histopathology
- •3.6.1.4 Treatment
- •3.6.1.5 Prognosis
- •3.6.2 Neuroblastoma
- •3.6.2.1 Clinical Presentation
- •3.6.2.2 Imaging
- •3.6.2.3 Histopathology
- •3.6.2.4 Treatment
- •3.6.2.5 Prognosis
- •3.6.3 Retinoblastoma
- •3.6.3.1 Clinical Presentation
- •3.6.3.2 Imaging
- •3.6.3.3 Histopathology
- •3.6.3.4 Treatment
- •3.6.3.5 Prognosis
- •3.6.4 Granulocytic Sarcoma
- •3.6.4.1 Clinical Presentation
- •3.6.4.2 Imaging
- •3.6.4.3 Histopathology
- •3.6.4.4 Treatment
- •3.6.4.5 Prognosis
- •3.6.5 Rhabdomyosarcoma
- •References
- •4.1 Introduction
- •4.2 Clinical and Radiological Presentation
- •4.3 Staging
- •4.4 Surgery
- •4.5 Chemotherapy
- •4.6 Radiation Therapy
- •4.7 Conclusions and Future Directions
- •References
- •5 Metastatic Orbital Tumors
- •5.1 Introduction
- •5.2 Incidence
- •5.3 Anatomical Considerations
- •5.4 Presentation and Clinical Features
- •5.5 Diagnosis
- •5.6 Treatment
- •5.7 Types of Cancer Metastatic to the Orbit
- •5.7.1 Breast Carcinoma
- •5.7.2 Lung Carcinoma
- •5.7.3 Prostate Carcinoma
- •5.7.4 Melanoma
- •5.7.5 Carcinoid Tumors
- •5.7.6 Other Cancers
- •5.8 Conclusion
- •References
- •6.1 Tumors of Intraocular and Ocular Adnexal Origin
- •6.1.1 Eyelid Tumors
- •6.1.2 Intraocular Tumors
- •6.2 Tumors of Sinus and Nasopharyngeal Origin
- •6.2.1 Squamous Cell Carcinoma
- •6.2.2 Other Tumors of Sinus and Nasopharyngeal Origin
- •6.3 Tumors of Brain Origin
- •6.3.1 Meningioma
- •6.3.2 Other Intracranial Tumors
- •References
- •7 Lacrimal Gland Tumors
- •7.1 Introduction
- •7.2 Lymphoproliferative Lesions of the Lacrimal Gland
- •7.3 Benign Epithelial Tumors of the Lacrimal Gland
- •7.3.1 Pleomorphic Adenoma
- •7.3.2 Other Benign Epithelial Tumors
- •7.4 Malignant Epithelial Tumors of the Lacrimal Gland
- •7.4.1 Adenoid Cystic Carcinoma
- •7.4.2 Other Malignant Epithelial Tumors
- •7.5 AJCC Staging for Lacrimal Gland Tumors
- •References
- •8.1 Introduction
- •8.2 Indications
- •8.3 Surgical Techniques
- •8.3.1 Medial Orbitotomy Approach
- •8.3.2 Medial Eyelid Crease Approach
- •8.3.3 Lateral Orbitotomy Approach
- •8.3.4 Lateral Canthotomy Approach
- •8.4 Possible Indications for ONSF in Cancer Patients
- •8.4.1 Metastatic Breast Cancer
- •8.4.2 Lymphomatous Optic Neuropathy Diagnosed by Optic Nerve Biopsy
- •8.4.3 Adjuvant Therapy in Optic Nerve Sheath Meningioma
- •8.4.4 Papilledema Associated with Brain Tumors
- •8.4.5 Radiation-Induced Optic Neuropathy
- •8.5 Complications of ONSF
- •8.6 Future Research
- •References
- •9 Management of Primary Eyelid Cancers
- •9.1 Introduction
- •9.2 Types of Eyelid Malignancies
- •9.2.1 Basal Cell Carcinoma
- •9.2.2 Squamous Cell Carcinoma
- •9.2.3 Melanoma
- •9.2.4 Sebaceous Gland Carcinoma
- •9.2.5 Other Primary Eyelid Malignancies
- •9.3 Management
- •9.3.1 Evaluation
- •9.3.2 Tumor Excision and Eyelid Reconstruction
- •9.3.3 Sentinel Lymph Node Biopsy
- •9.3.4 Nonsurgical Treatment
- •9.3.5 Follow-up
- •References
- •10 Management of Conjunctival Neoplasms
- •10.1 Introduction
- •10.2 Squamous Cell Neoplasms of the Conjunctiva
- •10.2.1 Conjunctival Intraepithelial Neoplasia
- •10.2.2 Invasive Squamous Cell Carcinoma
- •10.2.3 Management
- •10.2.3.1 Local Excision and Cryotherapy
- •10.2.3.2 Treatment of More Advanced Disease
- •10.2.4 Surveillance
- •10.3 Melanocytic Neoplasms
- •10.3.1 Nevus
- •10.3.2 Primary Acquired Melanosis
- •10.3.3 Conjunctival Melanoma
- •References
- •11 Surgical Specimen Handling for Conjunctival and Eyelid Tumors
- •11.1 Introduction
- •11.2 Communication with the Pathologist
- •11.3 Conjunctival Specimens
- •11.4 Eyelid Specimens
- •11.5 Mohs Micrographic Surgery
- •11.6 Summary
- •References
- •12 Neuroradiology of Ocular and Orbital Tumors
- •12.1 Introduction: Imaging and Protocol
- •12.2 Anatomy
- •12.3 Intraocular Lesions
- •12.3.1 Retinoblastoma
- •12.3.2 Uveal Melanoma
- •12.3.3 Uveal Metastases
- •12.4 Orbital Lesions
- •12.4.1 Lymphoma
- •12.4.2 Orbital Rhabdomyosarcoma
- •12.4.3 Orbital Nerve Sheath Tumors
- •12.4.4 Mesenchymal Tumors of the Orbit
- •12.4.5 Orbital Pseudotumor
- •12.4.6 Orbital Metastases
- •12.5 Optic Nerve Tumors
- •12.5.1 Optic Nerve Glioma
- •12.5.2 Optic Nerve Sheath Meningiomas
- •12.6 Lacrimal Gland Tumors
- •12.7 Secondary Tumor Spread to the Orbit
- •12.8 Periorbital Skin Cancer and Perineural Spread
- •12.9 Conclusion
- •References
- •13 Radiation Therapy for Orbital and Adnexal Tumors
- •13.1 Indications
- •13.2 Radiation Therapy Terminology
- •13.3 Radiation Therapy Techniques
- •13.4 Radiation Therapy for Squamous Cell Carcinoma of the Eyelid
- •13.5 Adjuvant Radiation Therapy for Ocular Adnexal Tumors
- •13.6 Radiation Therapy for Optic Nerve Meningiomas and Orbital Rhabdomyosarcomas
- •13.7 Toxic Effects of Radiation Therapy
- •13.8 Summary
- •References
- •14.1 Historical Perspective
- •14.2 Presentation and Workup
- •14.4 Genetics
- •14.5 Pathologic Features
- •14.6 Treatment Options
- •14.6.1 General Considerations
- •14.6.2 Enucleation
- •14.6.3 Chemoreduction
- •14.6.4 Subtenon (Subconjunctival) Chemotherapy
- •14.6.5 Unilateral Disease
- •14.6.6 Bilateral Disease
- •14.7 Focal Therapies
- •14.7.1 Cryotherapy
- •14.7.2 Laser Photocoagulation
- •14.7.3 Brachytherapy
- •14.7.4 Thermotherapy
- •14.7.5 Radiation Therapy
- •14.8 Multi-institutional Clinical Trials
- •14.9 Animal Models of Retinoblastoma
- •14.10 Gene Transfer Technology for Treatment of Retinoblastoma
- •14.11 Future Development
- •References
- •15 Management of Uveal Melanoma
- •15.1 Epidemiology
- •15.2 Clinical Features
- •15.3 Diagnosis
- •15.4 Staging and Prognostic Factors
- •15.5 Background Studies
- •15.6 Overview of Management
- •15.7 Brachytherapy
- •15.8 Charged-Particle Radiotherapy
- •15.9 Surgical Techniques
- •15.9.1 Uveal Resection
- •15.9.2 Enucleation
- •15.9.3 Transpupillary Thermotherapy
- •15.9.4 Pathologic Assessment
- •15.9.5 Histologic Examination
- •15.10 Conclusion
- •References
- •16 Uveal Metastases from Solid Tumors
- •16.1 Introduction
- •16.2 Patient Characteristics
- •16.3 Symptoms
- •16.4 Clinical Features
- •16.5 Diagnosis
- •16.6 Treatment
- •16.6.1 Observation
- •16.6.2 External-Beam Radiation Therapy
- •16.6.3 Chemotherapy
- •16.6.4 Plaque Brachytherapy
- •16.6.5 Transpupillary Thermotherapy
- •16.6.6 Enucleation
- •16.7 Prognosis
- •16.8 Conclusions
- •References
- •17 Vascular Tumors of the Posterior Pole
- •17.1 Introduction
- •17.3 Circumscribed Choroidal Hemangioma
- •17.4 Management of Posterior Choroidal Hemangiomas
- •17.5 Acquired Vasoproliferative Tumors of the Retina
- •17.6 Conclusions
- •References
- •18 Reconstructive Surgery for Eyelid Defects
- •18.1 Introduction
- •18.2 General Principles
- •18.3 Eyelid Defects Not Involving the Eyelid Margin
- •18.4 Small Defects Involving the Lower Eyelid Margin
- •18.5 Moderate Defects Involving the Lower Eyelid Margin
- •18.6 Large Defects Involving the Lower Eyelid Margin
- •18.7 Small Defects Involving the Upper Eyelid Margin
- •18.8 Moderate Defects Involving the Upper Eyelid Margin
- •18.9 Large Defects Involving the Upper Eyelid Margin
- •18.10 Lateral Canthal Defects
- •18.11 Medial Canthal Defects
- •References
- •19.1 Introduction
- •19.2 Anatomy
- •19.3 Causes of Obstruction
- •19.4 Evaluation
- •19.5 Treatment
- •References
- •20.1 Introduction
- •20.2 Ectropion
- •20.2.1 Ectropion Due to Facial Nerve Paralysis
- •20.2.2 Cicatricial Ectropion
- •20.3 Entropion
- •20.4 Ptosis
- •20.5 Eyelid Retraction
- •20.6 Periorbital Edema Secondary to Imatinib Mesylate
- •References
- •21.1 Introduction
- •21.2 Anatomic Considerations
- •21.2.1 Orbital Margin
- •21.2.2 Nasal and Paranasal Sinuses
- •21.2.3 The Lacrimal System
- •21.2.4 Maxilla
- •21.3 Repair of Orbital Defects
- •21.3.1 Overview of Approaches
- •21.3.1.1 Maxillectomy with Orbital Exenteration
- •21.3.1.2 Maxillectomy Without Orbital Exenteration
- •21.3.2 Types of Maxillary Defects and Strategies for Their Repair
- •21.3.2.1 Type I Defect
- •21.3.2.2 Type II Defects
- •21.3.2.3 Type III Defects
- •21.3.2.4 Type IV Defects
- •21.3.3 Reconstruction After Orbital Exenteration
- •21.4 Conclusion
- •References
- •22.1 Introduction
- •22.2 Surgical Technique
- •22.2.2 Resection of Optic Nerve in Patients with Retinoblastoma
- •22.2.3 Maintenance of Globe Integrity
- •22.3 Choice of Implant
- •22.4 Management of the Anophthalmic Socket After Enucleation and Radiation Therapy
- •22.4.1 Patients with Retinoblastoma
- •22.4.2 Patients with Uveal Melanoma with Microscopic Extrascleral Extension
- •22.4.3 Patients with Head and Neck Cancer
- •22.5 Evisceration
- •References
- •23.2 Indications
- •23.3 Preoperative Evaluation
- •23.4 Surgical Techniques of Orbital Exenteration
- •23.5 Reconstructive Options
- •23.6 Surgical Complications
- •23.7 Rehabilitation After Orbital Exenteration
- •Suggested Readings
- •24.1 Introduction
- •24.2 Relevant Anatomy
- •24.3 Clinical Evaluation
- •24.3.1 Evaluation of Muscle Function
- •24.3.2 Evaluation of Lacrimal Gland and Lacrimal Drainage System Function
- •24.4 Medical Management
- •24.5 Surgical Management
- •24.5.1 Treatment of Lagophthalmos and Exposure Keratopathy
- •24.5.2 Treatment of Lower Eyelid Laxity and Ectropion
- •24.5.3 Reanimation of the Midface
- •24.5.3.1 Static Reanimation
- •24.5.3.2 Dynamic Reanimation
- •24.5.4 Options for Correction of Brow Ptosis
- •24.5.5 Additional Procedures for Management of Facial Droop
- •24.6 Special Circumstances in Cancer Patients with Facial Nerve Paralysis
- •24.7 Conclusion
- •References
- •25.1 Introduction
- •25.4 Conclusions and Recommendations
- •References
- •26 Lacrimal and Canalicular Toxicity
- •26.1 Introduction
- •26.2 5-Fluorouracil
- •26.4 Docetaxel
- •26.5 Epiphora Associated with Other Chemotherapeutic Drugs
- •26.6 Conclusions
- •References
- •27.1 Introduction
- •27.2 Orbital, Periorbital, and Orbital Teratogenic Side Effects by Individual Drug
- •27.2.1 Busulfan
- •27.2.2 Capecitabine
- •27.2.3 Carmustine
- •27.2.4 Cetuximab
- •27.2.5 Cisplatin
- •27.2.6 Cyclophosphamide
- •27.2.7 Cytarabine
- •27.2.8 Docetaxel
- •27.2.9 Doxorubicin
- •27.2.10 Erlotinib
- •27.2.11 Etoposide
- •27.2.12 Fluorouracil
- •27.2.13 Imatinib Mesylate
- •27.2.14 Interferons
- •27.2.15 Interleukin-2, Interleukin-3, and Interleukin-6
- •27.2.16 6-Mercaptopurine
- •27.2.17 Methotrexate
- •27.2.18 Mitomycin C
- •27.2.19 Mitoxantrone Dihydrochloride
- •27.2.20 Plicamycin
- •27.2.21 Thiotepa
- •27.2.22 Vincristine
- •27.3 Summary
- •References
- •28.1 Introduction
- •28.2 Epidemiology
- •28.2.1 Bacterial
- •28.2.2 Viral
- •28.2.3 Fungal
- •28.3 Pathogenesis and Host Defense
- •28.4 Ocular and Orbital Manifestations of Infection
- •28.4.1 Bacterial
- •28.4.2 Viral
- •28.4.3 Fungal
- •28.4.3.1 Candida Species
- •28.4.3.2 Aspergillus Species
- •28.4.3.3 Other Fungal Species
- •28.5 Conclusion
- •References
- •29.1 Introduction
- •29.2 Ophthalmologic Findings with CN III, IV, and VI Palsies
- •29.3 CN III, IV, and VI Palsies due to Primary Cranial Nerve Neoplasms and Direct Extension from Primary Brain, Brain Stem, or Skull base Tumors
- •29.4 CN III, IV, and VI Palsies due to Metastasis to the Brain, Brain, Stem and Skull Base from Distant Sites
- •29.5 Cranial Nerve III, IV, and VI Palsies due to Head and Neck Cancers
- •29.6 Cranial Nerve III, IV, and VI Palsies due to Leptomeningeal Disease
- •29.7 Other Causes of CN III, IV, and VI Palsies in Cancer Patients
- •29.8 Conclusion
- •References
- •30 Skull Base Tumors
- •30.1 Introduction
- •30.2 Anatomy of the Skull Base
- •30.3 Imaging and Diagnosis of Skull Base Tumors
- •30.4 Skull Base Tumors and Neuro-ophthalmic Correlations
- •30.4.1 Esthesioneuroblastoma
- •30.4.2 Chordoma
- •30.4.3 Craniopharyngioma
- •30.4.4 Meningioma
- •30.4.5 Sinonasal and Nasopharyngeal Tumors
- •30.4.6 Schwannoma
- •30.4.7 Pituitary Tumors
- •30.4.8 Myeloma
- •30.4.9 Paraganglioma
- •30.4.10 Metastases
- •References
- •31.1 Optic Pathway Gliomas
- •31.1.1 Demographics and Presentation
- •31.1.2 Histopathology
- •31.1.3 Imaging and Lesion Location
- •31.1.4 Differential Diagnosis
- •31.1.5 Management
- •31.1.6 Prognosis
- •31.2 Optic Nerve Sheath Meningiomas
- •31.2.1 Incidence
- •31.2.2 Histology and Pathophysiology
- •31.2.3 Clinical Presentation
- •31.2.4 Imaging
- •31.2.5 Treatment
- •References
- •32 Leptomeningeal Disease
- •32.1 Introduction
- •32.2 Epidemiology
- •32.3 Clinical Presentation
- •32.3.1 LMD due to Solid Tumors
- •32.3.2 LMD due to Hematogenous Tumors
- •32.3.3 LMD due to Primary Brain Tumors
- •32.4 Diagnosis
- •32.4.1 Radiographic Imaging
- •32.4.2 Optic Neuropathies in LMD
- •32.5 Treatment
- •32.6 Prognosis
- •32.7 Conclusion
- •References
- •33 Paraneoplastic Visual Syndromes
- •33.1 Introduction
- •33.2 Pathogenesis
- •33.3 Carcinoma-Associated Retinopathy
- •33.4 Carcinoma-Associated Cone Dysfunction Syndrome
- •33.5 Melanoma-Associated Retinopathy
- •33.6 Autoimmune Retinopathy
- •33.7 Paraneoplastic Optic Neuropathy
- •33.8 Diagnostic Testing
- •33.9 Differential Diagnosis
- •33.10 Treatment and Prognosis
- •33.11 Conclusion
- •References
- •34.1 Introduction
- •34.2 NF1 and the Optic Pathway
- •34.3.1 Description and Clinical Issues
- •34.3.2 Evaluation and Management
- •34.4 Intraorbital Optic Nerve Glioma
- •34.4.1 Description and Clinical Issues
- •34.4.2 Evaluation and Management
- •34.5 Chiasmal and Hypothalamic Glioma
- •34.5.1 Description and Clinical Issues
- •34.5.2 Evaluation and Management
- •34.6 Intraparenchymal Astrocytoma
- •34.6.1 Description and Clinical Issues
- •34.6.2 Evaluation and Management
- •34.7 Conclusion
- •References
- •35 Other Optic Nerve Maladies in Cancer Patients
- •35.1 Introduction
- •35.2 Optic Neuropathies Related to Elevated ICP
- •35.2.1 Causes of Elevated ICP
- •35.2.2 Treatment of Elevated ICP
- •35.4 Optic Neuropathies Caused by Drugs
- •35.4.1 Optic Disc Edema Secondary to Drug-Induced Elevated ICP
- •35.4.1.1 Retinoids
- •35.4.1.2 Imatinib Mesylate
- •35.4.1.3 Cyclosporine A
- •35.4.1.4 Cytarabine
- •35.4.2 Elevated ICP Secondary to Cerebral Venous Thrombosis
- •35.4.2.1 Cisplatin
- •35.4.2.2 L-Asparaginase
- •35.4.3 Optic Disc Edema Usually Without Elevated ICP
- •35.4.3.1 Cisplatin
- •35.4.3.2 Carboplatin
- •35.4.3.3 Carmustine
- •35.4.3.4 Vincristine
- •35.4.3.5 5-Fluorouracil
- •35.4.3.6 Cyclosporine A
- •35.4.3.7 Tacrolimus
- •35.4.4 Optic Neuropathy Without Disc Edema
- •35.4.4.1 Fludarabine
- •35.4.4.2 Tacrolimus
- •35.4.4.3 Paclitaxel
- •35.4.4.4 Methotrexate
- •35.4.4.5 Cytarabine
- •35.5 Optic Neuropathies Caused by Radiation
- •References
- •36 Management of Endogenous Endophthalmitis
- •36.1 Introduction
- •36.2 Epidemiology
- •36.3 Microbiology
- •36.4 Clinical Manifestations and Diagnosis
- •36.5 Treatment
- •36.5.1 Bacterial Endophthalmitis
- •36.5.2 Fungal Endophthalmitis
- •36.5.2.1 Yeast Endophthalmitis
- •36.5.2.2 Mold Endophthalmitis
- •36.6 Prognosis
- •36.7 Summary
- •References
- •37 Viral Retinitis in the Cancer Patient
- •37.1 Introduction
- •37.2 Epidemiology
- •37.3 Clinical Features
- •37.3.1 CMV Retinitis
- •37.3.2 Acute Retinal Necrosis
- •37.3.3 Progressive Outer Retinal Necrosis
- •37.4 Treatment
- •37.4.1 CMV Retinitis
- •37.4.1.1 Intravitreal Injections
- •37.4.1.2 Ganciclovir Implant
- •37.4.2 Acute Retinal Necrosis
- •37.4.3 Progressive Outer Retinal Necrosis
- •37.5 Role of Vitreoretinal Surgery in Viral Retinitis
- •37.5.1 Argon Laser Photocoagulation
- •37.5.2 Retinal Detachment Repair
- •37.6 Prognosis
- •37.6.1 CMV Retinitis
- •37.6.2 Acute Retinal Necrosis
- •37.6.3 Progressive Outer Retinal Necrosis
- •37.7 Conclusion
- •References
- •38.1 Introduction
- •38.2 Indications for Diagnostic Vitrectomy
- •38.2.1 Vitreous Biopsy
- •38.2.2 Uveal Biopsy
- •38.3 Preoperative Considerations
- •38.3.1 Thrombocytopenia
- •38.3.2 Anesthesia
- •38.4 Vitreous Biopsy
- •38.4.1 Technique
- •38.4.2 Effect of Vitrector Gauge on Vitreous Sample
- •38.5 Uveal Biopsy
- •38.5.1 Technique
- •38.5.2 Complications
- •38.5.3 Collaboration with Pathology
- •38.6 Pathologic Processing
- •38.6.1 Cytology
- •38.6.2 Interleukin Measurement
- •38.6.3 Polymerase Chain Reaction
- •38.6.4 Genetic Analysis
- •38.6.5 Cytogenetic Uveal Melanoma Studies
- •38.7 Results of Diagnostic Vitrectomy
- •38.7.1 Common Diagnoses
- •38.7.2 Diagnostic Utility
- •38.8 Postoperative Considerations
- •38.9 Conclusion
- •References
- •39.1 Introduction and Epidemiology
- •39.2 Presentation and Diagnosis
- •39.3 Management
- •39.4 Future Considerations
- •39.5 Conclusions
- •References
- •Index
24 Periorbital Surgical Rehabilitation After Facial Nerve Paralysis |
307 |
paralytic brow include malposition of the brow and alopecia at the location of fixation; in addition, the endoscopic brow lift can result in a less robust lift than that achieved with the direct technique. In non-facial nerve palsy cases, the most serious complication of this procedure is damage to the temporal branch of the facial nerve.
24.5.5 Additional Procedures for Management of Facial Droop
Additional procedures for management of facial droop include rhytidectomy, lateral oral commissure lift, and lateral alar lift (Fig. 24.2). Rhytidectomy may be performed in conjunction with a midface lift and periocular reconstruction. Options for rhytidectomy via a preauricular incision are the superficial musculo-aponeurotic system lift and the deep plane lift. In patients with facial nerve paralysis, the usual concerns about damage to the facial nerve during the deep plane facelift do not apply, allowing for a more aggressive approach and making the deep plane rhytidectomy the preferred approach for resuspending the midface and lower face in such patients. Drooping of the corner of the mouth can be addressed with a lateral oral commissure lift, in which slings are used to suspend the orbicularis oris to either the orbital rim or the zygomatic arch. A simple variation is to perform a direct excision of skin and subcutaneous tissue along the lateral superior vermillion border; the open approach allows direct plication of the orbicularis oris. A lateral alar lift can correct collapse of the internal nasal valve; a direct curvilinear incision and skin resection can elevate the ala and open the nasal vestibule.
24.6Special Circumstances in Cancer Patients with Facial Nerve Paralysis
Many patients with head and neck cancer who undergo a parotidectomy develop facial nerve paralysis either due to direct mechanical compression of the nerve by tumor or due to the necessary sacrifice of the facial nerve during cancer-ablative surgery. In the majority of these patients, postoperative adjuvant radiation therapy is planned within 4–6 weeks after head and neck surgery. In these patients, we prefer not to perform periocular surgical rehabilitation during the primary ablative procedure as this type of “one-size-fits-all” approach would lead to less than ideal outcomes [1]. Instead, we prefer to evaluate the patient after the ablative head and neck surgery to assess the facial tone, the size of gold weight needed, and the degree of paralytic ectropion and lagophthalmos before we plan surgical rehabilitation of the periocular soft tissues. Periocular surgery can be done either during the week or two after the parotidectomy or a few weeks after radiation therapy is completed. An important consideration in planning the timing of periocular surgery is that although the radiation field in most cases does not include the periocular soft tissues, the mask used during daily head and neck irradiation can be uncomfortable in the immediate postoperative period after periocular surgery.
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Another potential special circumstance in cancer patients is chemotherapyinduced pancytopenia due to recent chemotherapy. In patients with such pancytopenia, surgery should be delayed until hematologic parameters have normalized. Prophylactic use of antibiotics in the perioperative period is also appropriate in the majority of cancer patients undergoing surgical rehabilitation for periocular manifestations of facial nerve paralysis.
24.7 Conclusion
Management of facial nerve paralysis in cancer patients poses complex challenges. Spontaneous improvement of facial nerve paralysis in cancer patients is uncommon as the nerve is often sacrificed during tumor resection. However, function may be regained if the nerve is affected only indirectly by compression or is only traumatized during ablative surgery or due to mass effect. The prevention of ocular surface morbidity is of paramount importance in facial nerve paralysis. Medical therapy is the first step, but often surgical intervention is indicated. Surgical procedures can help minimize morbidity to ocular tissues, provide static support for ptotic facial tissues, and sometimes restore dynamic voluntary movements. Furthermore, improvements in both facial function and symmetry from surgery may mitigate the psychological burden to patients living with facial nerve paralysis. Future developments in static and dynamic reanimation will help to further address the challenges of facial nerve paralysis. The extent and timing of rehabilitative surgery in cancer patients with facial nerve paralysis should be individualized and depend on many factors, including age, facial muscle tone, timing of adjuvant radiation therapy and chemotherapy, and long-term prognosis.
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