RESUMO
BACKGROUND: Tuberculum sellae meningiomas have an incidence from 5 to 10% of all intracranial meningiomas[2] and tend to be surgically difficult and challenging tumors given their proximity to important structures such as the internal carotid artery (ICA), anterior cerebral artery (ACA), and optic nerves.[3] Typically, their growth is posteriorly and superiorly oriented, thereby displacing the optic nerves and causing visual dysfunction, which is the primary indication for surgical treatment.[1] The main goals of the treatment are the preservation or restoration of visual abilities and a complete tumor resection.[1] Conventionally, surgical approaches to tuberculum meningiomas involve largely invasive extended bifrontal, interhemispheric, orbitozygomatic, pterional, and subfrontal eyebrow approaches. The supraorbital craniotomy, however, is a minimally invasive transcranial approach that offers a similar surgical corridor to conventional transcranial approaches, using a limited craniotomy and minimal brain retraction that can be used for tumoral and vascular pathologies,[4,5] offering added cosmetic outcomes.[1] We present the case of a patient undergoing a supraorbital transciliary craniotomy with a tuberculum sellae meningioma causing bitemporal hemianopsia. CASE DESCRIPTION: A 70-year-old female with chronic headaches and progressive vision loss and visual field deficit for about 1 year. On ophthalmological evaluation, she was able to fixate and follow objects with each eye, light perception was only present in the right eye, and the vision in the left eye was 0.2 decimal units. Her visual fields demonstrated severe campimetric deficits. Her extraocular movements were intact and bilateral pupils were equal, round, and reactive to light. MRI of the brain demonstrated tuberculum sellae meningioma with bilateral optic canal invasion, displacing the chiasm, and extending ≥180° around the medial ICA wall and anterior ACA wall. The patient underwent supraorbital transciliary keyhole approach for total resection of the tumor. Postoperatively, visual acuity and visual field were significantly improved. CONCLUSION: Performing a supraorbital transciliary keyhole craniotomy for tuberculum sellae meningiomas requires an adequate and meticulous preoperative planning to determine the optimal surgical corridor to the lesion. The use of supraorbital craniotomy is safe with good cosmetic results and potentially lower morbidity allowing for adequate exposure, resection, and release of neurovascular structures.
RESUMO
BACKGROUND: Neurocysticercosis is the most common parasitic disease affecting the central nervous system. Isolated sellar cysticercosis cysts are rare and can mimic other sellar lesion as cystic pituitary adenoma, arachnoid cyst, Rathke cleft cyst, or craniopharyngioma. The surgical resection is mandatory because the cysticidal drugs are ineffective, however, new microsurgical approaches are emerging to reduce complications and need to test in this condition. We present a patient with a sellar cysticercosis cyst treated by transciliar supraorbital keyhole approach. CASE DESCRIPTION: A 45-year-old female with presented with chronic severe headaches, progressive deterioration of 6 months in visual acuity and bitemporal hemianopia. The pituitary hormonal levels were normal. Magnetic resonance findings showed a sellar and suprasellar cyst and underwent a microsurgical supraorbital transciliar keyhole approach for lesion resection. Pathologically, the lesion demonstrated a parasitic wall characterized by wavy, dense cuticle, and focal globular structure, surrounding inflammatory reaction with plasma cells. Postoperatively, the patient recovery fully neurologically. CONCLUSION: Intrasellar cysticercosis cyst causes significant neurological deficits due to its proximity to the chiasm, optic nerves, pituitary stalk, and the pituitary gland. Surgical section is an effective treatment. The supraorbital keyhole craniotomy offers satisfactory exposure, possibility of total resection with dissection of the supra and parasellar structures, short operative time, less blood loss, short hospital stay, and good overall surgical outcome.
RESUMO
The eyebrow incision associated with medial supraorbital craniotomy is a minimally invasive alternative approach to the lesions located in the medial anterior cranial fossa. The main advantages of the medial supraorbital craniotomy regarding frontolateral supraorbital craniotomy are the absence of manipulation of the temporal muscle, less risk of injury to the frontotemporal branch of the facial nerve and a more medial view of the anterior structures such as frontal sinus, olfatory groove and frontal lobe. We report a unique case of cranial stab wound in which a piece of the knife stayed in the frontal sinus and removal was performed using the medial supraorbital approach. There were no complications during surgery, the patient reported mild hypoesthesia in the left frontal region and was discharged on the 7th postoperative day. During follow-up after 2 months, good cosmetic result of the surgical wound and preserved sensitivity of the left frontal region were noted.
RESUMO
An anatomical study of the frontal sinus in 100 macerated skulls. The study introduces an innovation on the literature by means of the measurement of the sinus's volume. All the found information in the literature attained to other aspects including the diameters of the sinus and the geometric area of the same. Objective: Evaluation of the measures of the frontal sinus frequently involved in cranial base surgeries and supraorbital craniotomies in order to help the surgical approaches that cross this anatomical route Methods: The measurement included: sagital, transverse and antero-posterior diameter acquired with a paquimeter and the volume obtained after filling the sinus with sand. Results: They are in accordance with the literature that shows the male's predominance in all measurements done.
Se presenta un estudio anatómico del seno frontal que fue realizado en 100 cráneos. El estudio introduce una novedad en la literatura, que es la medida volumétrica del seno frontal. Toda la literatura se refiere a otros aspectos, incluyendo los diámetros de los senos y su área geométrica. El objetivo del estudio fue estimar las medidas del seno frontal que con frecuencia hacen parte en las cirugías de la base del cráneo y en las craneotomías supraorbitarias, con la finalidad de facilitar las vías de acceso quirúrgico por estas regiones. Las medidas realizadas fueron: diámetro sagital, transversal y antero-posterior con un caliper, y el volumen fue obtenido llenando el seno con arena fina. Los resultados están de acuerdo con la literatura que demuestra un mayor predominio del sexo masculino en todas las medidas efectuadas.