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Vascularisation of the geniculate ganglion

100%

Dozic A., Cetkovic M., Marinkovic S., Mitrovic D., Grujicic M., Micovic M., Milisavljevic M.

Folia Morphologica

2014

tom 73

nr 4

Background: Lack of the relevant data in the literature and possible clinical significance of the geniculate ganglion vasculature inspired us to examine the vessels of this ganglion. Materials and methods: Twelve temporal bones were taken during autopsy and microdissected. Four geniculate ganglions were taken as well, serially sectioned and used for haematoxylin-eosin and trichrome staining, and for CD34 immunostaining. Results: The geniculate ganglion was supplied by the petrosal artery, which averaged 1.1 in number, 0.44 mm in the outer diameter, 0.24 mm in the luminal diameter, and 17.1 mm in length. The artery approached the greater petrosal nerve, giving off 1–3 twigs to it with a mean diameter of 24 µm, and entered the nerve hiatus or a small bone opening close to the ganglion. Before the artery continued to the tympanic segment of the facial nerve, it gave rise to 1 (8.33%), 2 (75.00%) or 3 (16.67%) branches to the geniculate ganglion, which ranged in diameter between 18 µm and 56 µm (mean 29 µm). From the formed superficial network, several twigs penetrated the ganglion and built an intraganglionic plexus. The counting, performed in microscopic fields, each measuring 341.7 µm × 250.0 µm in size, contained between 20 and 38 (mean 28.1) ganglion cells, as well as from 87 to 143 microvessels (mean 99.8), so that the neuron/vessel ratio was 1:3.6. Conclusions: This is the first detailed examination of the geniculate ganglion vasculature. The obtained data could be of clinical importance, especially in relation to the Bell’s palsy, ganglionitis, geniculate neuralgia, petrous bone imaging, and operations in the same region. (Folia Morphol 2014; 73, 4: 414–421)

The superficial palmar branch of the radial artery: a corrosion cast study

84%

Ilic M., Milisavljevic M., Laketic D., Eric D., Boljanovic J., Dozic A., Stimec B. V., Manojlovic R.

Folia Morphologica

2018

tom 77

nr 4

Background: Surgical procedures such as thenar flaps and radial artery (RA) harvesting call for an elaborate anatomical study of the RA’s superficial palmar branch (SPB). The aim of this study was to describe the branching pattern of this vessel related to the morphometric characteristics and variations of this artery. Materials and methods: Twenty 4% formalin solution-injected hands were dissected. For the morphometric study we used another group of 35 human hands of adult persons, injected with methyl methacrylate fluid into the ulnar and radial arteries. As soon as polymerisation was completed, a 40% solution of potassium hydroxide was applied for corrosion. The vascular arterial casts were examined under the stereoscopic microscope and precise drawings of each specimen were made. Results: In the majority of cases (75%) SPB passed superficially, over the abductor pollicis brevis muscle. The mean diameter of the SPB, very variable depending on its length and field of supply, was 1.52 ± 0.49 mm, ranging from 0.8 to 2.7 mm. Developed SPB type, was present in 31.4% of hands, with the diameter of 1.7 mm and larger (mean 1.95 mm), continuing distally to become the radialis indicis artery, with an average calibre of 1.2 mm, and with important branches to the thumb. In most hands (68.6%), the hypoplastic SPB, was present, with a mean diameter of 1.17 mm, and the field of supply within the thenar area. Conclusions: Knowledge of the SPB dominance and existence of anastomotic vessels in its field of supply are of importance to avoid the risk of possible ischaemic sequelae in the hand associated with harvesting the RA. (Folia Morphol 2018; 77, 4: 649–655)

Arterial supply of the trigeminal ganglion, a micromorphological study

84%

Cetkovic M., Stimec B. V., Mucic D., Dozic A., Cetkovic D., Reci V., Cerkezi S., Calasan D., Milisavljevic M., Bexheti S.

Folia Morphologica

2020

tom 79

nr 1

Background: In this study, we explored the specific microanatomical properties of the trigeminal ganglion (TG) blood supply and its close neurovascular relationships with the surrounding vessels. Possible clinical implications have been discussed. Materials and methods: The internal carotid and maxillary arteries of 25 adult and 4 foetal heads were injected with a 10% mixture of India ink and gelatin, and their TGs subsequently underwent microdissection, observation and morphometry under a stereoscopic microscope. Results: The number of trigeminal arteries varied between 3 and 5 (mean 3.34), originating from 2 or 3 of the following sources: the inferolateral trunk (ILT) (100%), the meningohypophyseal trunk (MHT) (100%), and from the middle meningeal artery (MMA) (92%). In total, the mean diameter of the trigeminal branches was 0.222 mm. The trigeminal branch of the ILT supplied medial and middle parts of the TG, the branch of the MHT supplied the medial part of the TG, and the branch of the MMA supplied the lateral part of the TG. Additional arteries for the TG emerged from the dural vascular plexus and the vascular network of the plexal segment of the trigeminal nerve. Uniform and specific intraganglionic dense capillary network was observed for each sensory trigeminal neuron. Conclusions: The reported features of the TG vasculature could be implied in a safer setting for surgical approach to the skull base, in relation to the surrounding structures. The morphometric data on TG vasculature provide anatomical basis for better understanding the complex TG blood supply from the internal and external carotid arteries. (Folia Morphol 2020; 79, 1: 58–64)

Ograniczanie wyników

3 Folia Morphologica

3 Dozic A.

3 Milisavljevic M.

2 Cetkovic M.

2 Stimec B. V.

1 Bexheti S.

1 Boljanovic J.

1 Calasan D.

1 Cerkezi S.

1 Cetkovic D.

1 Eric D.

1 Grujicic M.

1 Ilic M.

1 Laketic D.

1 Manojlovic R.

1 Marinkovic S.

1 Micovic M.

1 Mitrovic D.

1 Mucic D.

1 Reci V.

1 2020

1 2018

1 2014

Wyniki wyszukiwania

Vascularisation of the geniculate ganglion

The superficial palmar branch of the radial artery: a corrosion cast study

Arterial supply of the trigeminal ganglion, a micromorphological study