Publications by authors named "Kaveh Vahdani"

Purpose: To evaluate the subjective assessment of 8 orbital CT features for predicting dysthyroid optic neuropathy (DON).

Methods: Scan montages from 137 orbits without DON and 121 with DON were each graded independently by 3 observers for 8 imaging features: namely, degree of apical crowding, extraocular muscle enlargement, expansion of orbital fat, clarity of the superior orbital fissure, fat prolapse through the superior orbital fissure, medial wall bowing, general orbital vascular congestion, and dilation of the superior ophthalmic vein. Gradings were analyzed individually and also averaged across observers.

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Purpose: To evaluate clinical presentation, imaging patterns, histopathology, and predictors of malignancy in patients with enlargement of a single extraocular muscle.

Methods: Retrospective review, with imaging categorized into 3 groups: single-muscle only (SMO), single excessively-enlarged muscle, and single-muscle with lacrimal gland enlargement (SMLG). Histopathology was classified as specific or nonspecific myositis, atypical thyroid eye disease, malignancy, or other diagnosis.

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Purpose: To assess the reproducibility of subjective interpretation of computed x-ray tomography for 8 features associated with thyroid eye disease.

Methods: Patients with confirmed thyroid eye disease had 3 distinct orbital computed x-ray tomography sections presented as anonymized montages to 3 masked observers (#1 orbital radiologist, #2 general radiologist, and #3 orbital surgeon). Eight features were graded: superior orbital fissure clarity, degree of orbital fat prolapse through the superior orbital fissure, loss of fat space at the apex, muscle enlargement, increase in orbital fat volume, vascular congestion, superior ophthalmic vein size, and lamina papyracea bowing.

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Oncocytic carcinoma is a rare malignant neoplasm of oncocytic cells, such cells being characterized by abundant granular eosinophilic cytoplasm, invasive growth, and pronounced cellular pleomorphism. It may arise de novo, or through malignant transformation of a pre-existing benign oncocytoma. Oncocytic carcinoma most commonly occurs in the salivary glands, with rare involvement of the ocular adnexa where it mainly affects caruncle, conjunctiva, and lacrimal sac, and only very arises in the lacrimal gland.

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Purpose: The objective was to relate dacryoscintillographic features to presenting symptoms and signs for watery-eyed patients with patent drainage systems.

Methods: Retrospective case note and imaging review for patients with watering eye(s) and clinical evidence of impaired tear drainage who underwent dacryoscintillography (DSG). Three DSG features were graded, along with 4 symptoms, 7 signs, and the degree of fluid reflux and nasal fluid passage on gentle syringing.

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Purpose: The objective was to compare clinical characteristics of patients with and without a known systemic malignancy at the time of diagnosis of orbital metastases.

Methods: Retrospective case note and imaging review for patients with orbital metastases presenting between 1980 and 2022. Patients were classified as having known malignancy at orbital presentation (group I) or without known malignancy (group II).

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Purpose: The objective was to characterize symptoms and signs for patients with tearing eye(s) and ipsilateral nasolacrimal duct stenosis (NLDS), as defined by delayed fluorescein disappearance test and ocular reflux of saline during gentle irrigation of a patent drainage system.

Methods: Retrospective case-note review of a consistent grading of 4 symptoms and 7 signs, together with estimates of the degree of fluid reflux and nasal fluid passage on gentle saline syringing. Characteristics, including gender differences, were compared for unilateral or bilateral symptoms.

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Article Synopsis
  • Trigeminal trophic syndrome (TTS) is a rare condition caused by damage to the trigeminal nerve, leading to facial ulceration, loss of sensation, and abnormal skin sensations, especially near the nostrils.
  • The lesions associated with TTS arise from continuous self-harm and trauma to the affected skin area.
  • This report showcases three individual cases of TTS, emphasizing changes around the eyes and different causes such as strokes and herpes zoster infection.
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Article Synopsis
  • The study evaluates the success of a new surgical technique called conjunctival mucosal transposition for treating contracted fornices in anophthalmic sockets (eyes that have been removed).
  • A review of 32 patients showed that 81% had good anatomical results after an average follow-up of 9.2 years, with higher success rates in patients with milder contractions.
  • While most patients experienced comfortable prosthetic wear, some with severe contractions needed additional procedures due to complications from the transposition flap technique.
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Purpose: To evaluate the presenting features of patients with nontraumatic orbital hemorrhage (NTOH) based on etiopathological factors.

Methods: A retrospective case-note review for demographics and presenting features of patients with nontraumatic orbital hemorrhage. Patients were categorized into 3 groups: group I with known systemic vascular disease, group II with known or newly revealed orbital vascular anomalies, and group III with no known underlying vasculopathy.

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Article Synopsis
  • The study analyzed long-term outcomes of surgery for primary benign papillomas in the lacrimal drainage system, focusing on patients treated between 1984 and 2021.
  • Approximately 30% of 30 patients experienced tumor recurrence over an average follow-up of 10.4 years, with higher rates in endophytic growth types.
  • No malignant transformations were reported, suggesting effective management through surgical excision and highlighting the need for ongoing monitoring, particularly for patients with endophytic or mixed-pattern tumors.
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Purpose: To examine the indications for repeated lacrimal gland biopsies, and the rate of detection of a new diagnosis.

Methods: A single-center, retrospective review of patients who underwent more than 1 lacrimal gland biopsy, either ipsilateral or contralateral, between 2000 and 2022.

Results: One hundred and twenty-three patients (80 female; 65%) had repeated lacrimal gland biopsy.

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Purpose: To assess long-term outcomes and reinterventions for exposed and nonexposed intraconal orbital implants after single-stage socket revisional surgery.

Methods: Retrospective case-note review of patients with exposed or nonexposed orbital ball implants, who underwent a single-stage ball exchange (Group I) or ball removal with dermis-fat graft (Group II); Group I was subdivided as having either exposed (A) or nonexposed (B) implants. Outcomes were compared with similar cohorts undergoing multistage surgery.

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Purpose: To evaluate long-term outcomes of staged volume rehabilitation for acquired anophthalmos.

Methods: Case-note review of patients who had preceding i) eye removal without implant, ii) eye removal with an intraconal implant, but ball-related problems, or iii) removal of exposed implant. Secondary interventions were a) a first-time ball implant, b) dermis-fat graft, c) ball repositioning, d) ball replacement after prior removal, or e) orbital floor implantation.

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Background: Conventionally, management of involutional entropion involves correcting both vertical and horizontal laxity, however the optimal surgical approach is debated.

Objective: To compare the recurrence rate of horizontal lower eyelid shortening alone with combined surgical approaches for correction of involutional lower eyelid entropion.

Methods And Material: A retrospective, comparative, consecutive case series of patients undergoing surgery for involutional lower eyelid entropion with both horizontal and vertical laxity.

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Purpose: To describe a case of recurrent orbital inflammation and superior orbital fissure syndrome associated with VEXAS (vacuoles, E1 enzyme, X-linked, auto-inflammatory, somatic) syndrome.

Case Presentation: VEXAS syndrome is a recently identified multi-system inflammatory disease of late adult onset. The authors describe the case of a 76-year-old man who presented with recurrent episodes of orbital inflammation, with superior orbital fissure syndrome, dacryoadenitis and orbital myositis.

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Article Synopsis
  • The study discusses orbital infarction syndrome resulting from prolonged pressure on the eye area during drug-induced stupor in young individuals.
  • Two cases were reviewed where patients experienced severe vision loss, swelling, pain, and inability to move their eyes due to this condition.
  • Despite some recovery in eye movement and orbital changes, the affected individuals suffered persistent vision problems and optic atrophy, highlighting risks associated with improper head positioning while using drugs.
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Purpose: To report long-term outcomes after surgery for orbital solitary fibrous tumors.

Methods: Retrospective review of patients with orbital solitary fibrous tumor, first seen between 1971 and 2022. Primary excisions were grouped as (A) surgically intact, (B) macroscopic, but with cell spillage, or (C) known incomplete excision.

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Aims: To evaluate presenting features of patients with orbital solitary fibrous tumours (SFTs), based on histological phenotype.

Methods: A retrospective case-note review was performed for demographics and presenting features for patients with orbital SFTs. The tumours were classified as "Group IA" hypocellular SFT phenotype, "Group IB" haemangiopericytoma phenotype and low mitotic activity, and high-grade "Group II" haemangiopericytoma phenotype with high mitotic activity.

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