Results 51 to 60 of about 3,742 (199)

Redescription of the Triassic cynodont Cistecynodon parvus and reassessment of its phylogeny

open access: yesThe Anatomical Record, EarlyView.
Abstract Cynodontia is an important subclade of Therapsida that first occurred in the late Permian. It includes extinct subclades which are the non‐mammaliaform cynodonts and Mammaliaformes, with the latter ultimately giving rise to crown mammals. The systematics of non‐mammaliaform cynodonts has been extensively studied and is relatively well‐resolved,
Erin S. Lund   +4 more
wiley   +1 more source

Evolutionary radiation of large‐bodied gorgonopsians from the lower Abrahamskraal formation of South Africa

open access: yesThe Anatomical Record, EarlyView.
Abstract The middle Permian represents a critical interval in therapsid evolution, when gorgonopsians emerged as some of the first specialized apex predators within terrestrial ecosystems. Despite their significance, the early diversification of Gorgonopsia in Gondwana remains poorly understood due to scarcity and fragmentary material.
Zanildo Macungo   +5 more
wiley   +1 more source

Prevalence and causes of low vision and blindness in an urban population: The Chennai Glaucoma Study

open access: yesIndian Journal of Ophthalmology, 2014
Aim: To evaluate the prevalence and causes of low vision and blindness in an urban south Indian population. Settings and Design: Population-based cross-sectional study.
Lingam Vijaya   +4 more
doaj   +1 more source

Description of large, well‐preserved Enchodus specimens from the Bearpaw Formation of Alberta, Canada

open access: yesThe Anatomical Record, EarlyView.
Abstract Fishes of the genus Enchodus were abundant and cosmopolitan in the Late Cretaceous, but are primarily known from isolated remains in Canada. Four well‐preserved fish skulls were recovered in recent years from ammolite mines sampling the Bearpaw Formation of Southern Alberta, and are here referred to Enchodus petrosus Cope, 1874.
Luke E. Nelson   +2 more
wiley   +1 more source

Poorly differentiated sebaceous carcinoma of the lacrimal sac in a young adult: A case report

open access: yesSAGE Open Medical Case Reports
Lacrimal sac and nasolacrimal duct tumors are extremely rare, and most of them are malignant tumors, which are often misdiagnosed as chronic dacryocystitis. We herein report a rare case of a 29-year-old female, presented with a history of watering in the
Sandeep Pal   +4 more
doaj   +1 more source

Increased choroidal thickness in patient with high-altitude retinopathy

open access: yesIndian Journal of Ophthalmology, 2014
We report a case of high-altitude retinopathy with increased choroidal thickness detected by spectral-domain optical coherence tomography (SD-OCT). A 36-year-old Japanese man developed an acute vision decrease in his left eye after he had trekked at an ...
Kyoko Hirukawa-Nakayama   +4 more
doaj   +1 more source

Primary Sebaceous Carcinoma of the Lacrimal Gland

open access: yes, 2012
Primary sebaceous carcinoma is an exceptionally rare tumor of the lacrimal gland and less than 10 cases have been so far published in the literature. Two adult patients aged 38 and 81 years, respectively, who suffered unilateral painful massive swelling ...
Firat, Pinar   +2 more
core   +1 more source

Morphometric Evaluation of the Lacrimal Sac Fossa in Anatolian Population Using Multidetector Computed Tomography

open access: yes, 2022
Amaç: Anadolu toplumunda, fossa sacci lacrimalis’in morfometrik özelliklerini cerrahi açıdan mul-tidedektör bilgisayarlı tomografi (MDBT) görüntüleri kullanarak araştırmak.Materyal ve Metod: Toplam 77 kranial MDBT taraması değerlendirildi.
ÇEVİK, YİĞİT   +13 more
core   +1 more source

Endoscopic‐Assisted Transcervical Excision of Second Branchial Cleft Anomalies in Young Children

open access: yesThe Laryngoscope, EarlyView.
We describe an endoscopic‐assisted transcervical technique for excision of second branchial cleft anomalies in young children. In three cases (ages 2–8), this approach allowed safe identification and ligation of the tracts while providing improved visualization and allowing smaller incisions.
Thinh T. Kieu   +4 more
wiley   +1 more source

Ophthalmic masquerades of the atherosclerotic carotids

open access: yesIndian Journal of Ophthalmology, 2014
Patients with carotid atherosclerosis can present with ophthalmic symptoms. These symptoms and signs can be due to retinal emboli, hypoperfusion of the retina and choroid, opening up of collateral channels, or chronic hypoperfusion of the globe (ocular ...
Anupriya Arthur   +4 more
doaj   +1 more source

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