The presence of orbital lymphatics in the primate model is demonstrated using light and electron microscopic enzyme histochemistry. In addition, strictly morphological definitions of lymphatics, such as discontinuous basal lamina, thin and irregular walls, anchoring filaments, and attenuated endothelial cell cytoplasm, were applied. This study confirmed the presence of conjunctival lymphatics reported by others. It also clearly demonstrated the presence of orbital arachnoid and lacrimal gland lymphatics that have not been previously described. A few areas of the extraocular muscles and connective tissue at the orbital apex also showed evidence of the presence of lymphatic vessels. Additional work is needed to define the nature and extent of orbital lymphatics as well as their connection to the extraorbital lymphatic system.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Congenital conjunctival cyst detected by prenatal ultrasound.
Am J Ophthalmol Case Rep
March 2025
University of South Carolina/Prisma Health, Columbia, SC, USA.
Purpose: The purpose of this manuscript is to report a rare case of an orbital cyst detected intrauterine with sonography.
Observation: A 23-year-old female presented for routine prenatal monitoring when an orbital cyst was detected with a transabdominal ultrasound. Uncomplicated cesarean section was performed at 38 weeks gestation with proptosis of the left globe being noted on ophthalmic examination of the newborn.
Orbital Lymphangioma in an Adolescent Male: A Case Report and Review of Literature.
Cureus
November 2024
Radiodiagnosis, MNR Medical College and Hospital, Sangareddy, IND.
Lymphangiomas are localized multi-cystic malformations of the lymphatic and vascular system, primarily affecting the head and neck regions in children. Orbital lymphangiomas are not considered hamartomas because the orbit does not commonly display lymphatic vessels. In this case report, we describe a male patient who was 15 years old and presented to our medical facility with the primary complaints of having a bulging left eye, sudden chemosis of the lower conjunctiva, and pain in the left eye.
View Article and Find Full Text PDFThe Role of the Eyelids of the Black-Winged Kite, Elanus caeruleus in the Immune Protection of the Eye.
Microsc Res Tech
December 2024
Zoology and Entomology Department, Faculty of Science, Assiut University, Assiut, Egypt.
This study aimed to describe the morphological features and microstructure of the upper, lower, and third eyelids of the black-winged kite, Elanus caeruleus, and to characterize the organized lymphoid follicles and lymphocytes in the eyelid mucosa. Additionally, it aimed to illustrate the importance of the eye adnexa in the eye's immune protection. The upper, lower, and third eyelids display varying morphological differences that seem to be closely linked to the birds' way of life, indicating adjustments to their environment and eating behaviors.
View Article and Find Full Text PDFOlfactory neuroblastoma: literature review and presentation of two clinical cases with different tumour infiltrations and different approaches.
Neurocirugia (Astur : Engl Ed)
December 2024
Departamento de Neurocirugía, Fundación Oftalmológica de Santander - Clínica Ardila Lülle, Floridablanca, Colombia. Electronic address:
The olfactory neuroblastoma is a rare malignant neoplasm derived from the olfactory neuroepithelium. It can metastasize to cervical lymph node chains and distant organs through hematogenous or lymphatic routes. Two clinical cases are presented: the first, a 56-year-old man with no pathological history, exhibited symptoms evolving over 2 months, characterized by persistent rhinorrhea with frequent epistaxis, ipsilateral proptosis, left hemicranial pain, anosmia, and dysgeusia.
View Article and Find Full Text PDFExploring Potential Orbital Metastatic Pathways in Sinonasal Mucosal Melanoma: A Case Report.
Case Rep Otolaryngol
November 2024
Department of Head and Neck Surgical Oncology, University Medical Center Utrecht, Utrecht, Netherlands.
The following case potentially provides insight into the mechanisms of lymphogenic metastasis in sinonasal cancer. A 63-year-old patient who presented with progressive diplopia and left-sided periocular pain was diagnosed with a cT4bN0M0 mucosal melanoma of the ethmoid sinus. She underwent a combined endonasal and transcranial tumor resection, and an orbital exenteration.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!