Variation of hemiazygos vein with absence of accessory hemiazygos vein - a dissection study

AbstractHemiazygos vein and Accessory hemiazygos vein lie on the left side in the posterior mediastinum of thorax and are the counterpart of azygos vein on right side. During routine cadaveric dissection of thoracic region in an adult male, we found an abnormal venous channel which was single and was lying on the left side of the vertebral column. It received tributaries from superior intercostal vein and posterior intercostal veins. We found this abnormal venous channel draining directly into left brachiocephalic vein in contrast to its usual drainage into azygos vein. Hence this can be considered as abnormal venous channel and variant of hemiazygos vein and accessory hemiazygos vein. The azygos and hemiazygos venous system is commonly encountered during surgical intervention performed on posterior thoracic wall. This case report provides a new data of potential clinical significance.

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Multiple variations of azygos system of veins: a case report

Journal of Morphological Sciences ◽

10.4322/jms.097715 ◽

2017 ◽

Vol 34 (01) ◽

pp. 007-009

Author(s):

P. Maloor ◽

S. Nayak ◽

D. Reghunathan ◽

S. Shetty ◽

G. Prabhu

Keyword(s):

Case Report ◽

Venous Blood ◽

Azygos Vein ◽

Thoracic Vertebra ◽

Thoracic Wall ◽

Hemiazygos Vein ◽

Orthopedic Surgeons ◽

Left Posterior ◽

Lumbar Vein ◽

Ascending Lumbar Vein

AbstractAzygos venous system drains the venous blood from thoracic wall. Knowledge of variations of its course and tributaries is important to cardiothoracic surgeons, radiologists and orthopedic surgeons. We observed the following variations in the azygos veins. Both azygos and hemiazygos veins were formed by union of lumbar azygos and subcostal veins of corresponding sides. The ascending lumbar vein did not drain into the azygos system. The hemiazygos vein had a larger diameter than the lower part of azygos vein and it joined azygos vein at the level of seventh thoracic vertebra. Accessory hemiazygos vein was totally absent. The azygos vein received 4th to 11th right posterior intercostal veins and also received 3rd to 6th left posterior intercostal veins. Hemiazygos vein received 7th to 11th left posterior intercostal veins.

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An abnormal course of the interazygos vein: a case report

Journal of Medical Case Reports ◽

10.1186/s13256-020-02548-w ◽

2020 ◽

Vol 14 (1) ◽

Author(s):

Elham Shiri ◽

Soheila Madadi

Keyword(s):

Case Report ◽

Vertebral Column ◽

Azygos Vein ◽

Posterior Mediastinum ◽

Venous System ◽

Developmental Pattern ◽

Case Presentation ◽

Radiographic Interpretation

Abstract Background The azygos venous system in the posterior mediastinum has a complex developmental pattern. Case presentation During the dissection of this region, we encountered a variation in this system. In this case, we observed that the accessory hemiazygos and hemiazygos veins in the left side passed anterior to the aorta and drained to the azygos vein located on the left side of the vertebral column. Other structures were normal in this area. Conclusions This variation is important in mediastinal surgery and radiographic interpretation.

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Gunshot bullet embolus with pellet migration from the left brachiocephalic vein to the right ventricle: a case report

Scandinavian Journal of Trauma Resuscitation and Emergency Medicine ◽

10.1186/1757-7241-18-36 ◽

2010 ◽

Vol 18 (1) ◽

pp. 36 ◽

Cited By ~ 19

Author(s):

Nicholas Greaves

Keyword(s):

Case Report ◽

Right Ventricle ◽

Brachiocephalic Vein ◽

Left Brachiocephalic Vein ◽

The Right

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Pseudocoarctation of the aorta associated with retro-aortic left brachiocephalic vein: a case report

Surgical and Radiologic Anatomy ◽

10.1007/bf01623712 ◽

1990 ◽

Vol 12 (4) ◽

pp. 307-309 ◽

Cited By ~ 10

Author(s):

J-M Bartoli ◽

C Chagnaud ◽

G Moulin ◽

D Di Stefano-Louineau ◽

M Bory ◽

...

Keyword(s):

Case Report ◽

Brachiocephalic Vein ◽

Left Brachiocephalic Vein

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Descending Necrotising Mediastinitis: A Case Report Illustrating a Trend in Conservative Management

Case Reports in Otolaryngology ◽

10.1155/2012/504219 ◽

2012 ◽

Vol 2012 ◽

pp. 1-4 ◽

Cited By ~ 1

Author(s):

B. A. P. Jayasekera ◽

O. T. Dale ◽

R. C. Corbridge

Keyword(s):

Case Report ◽

Mortality Rate ◽

Surgical Intervention ◽

Case Series ◽

Ct Scanning ◽

Posterior Mediastinum ◽

Chest Drain ◽

Conservative Approach ◽

Computed Tomographic ◽

Contrast Enhanced

The mortality rate from descending necrotising mediastinitis (DNM) has declined since its first description in 1938. The decline in mortality has been attributed to earlier diagnosis by way of contrast-enhanced computed tomographic (CT) scanning and aggressive surgical intervention in the form of transthoracic drainage. We describe a case of DNM with involvement of anterior and posterior mediastinum down to the diaphragm, managed by cervicotomy and transverse cervical drainage with placement of corrugated drains and a pleural chest drain, with a delayed mediastinoscopy and mediastinal drain placement. We advocate a conservative approach with limited debridement and emphasis on drainage of infection in line with published case series.

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Spinal dysraphism with tripedus morphology: A case report

Indian Journal of Case Reports ◽

10.32677/ijcr.v7i11.3158 ◽

2021 ◽

pp. 509-511

Author(s):

Mohd Monis ◽

Shagufta Wahab ◽

Divyashree Koppal ◽

Aiman Ibbrahim

Keyword(s):

Case Report ◽

Spina Bifida ◽

Vertebral Column ◽

Rare Case ◽

Surgical Intervention ◽

Spinal Dysraphism ◽

Tethered Cord ◽

Lower Back ◽

Rare Case Report ◽

Spinal Mri

This is a rare case report of a 5-month-old child with a complex spinal dysraphic state, and an accessory limb (tripedus morphology), accessory genitalia, and anal dimple. The child was brought to the hospital with an accessory limb arising from the back. On clinical examination, an accessory limb arising from the lower back with a partially developed foot with the presence of toes and nails was noted. Spinal MRI was advised which revealed dysraphic features including spina bifida with the low lying and posteriorly tethered cord with diastematomyelia along with a supernumerary appendage attached to the vertebral column having rudimentary bones resembling those of extremities. The presence of an accessory limb with spinal dysraphism is quite a rare anomaly. The condition can be treated by surgical intervention and involves excision of the accessory limb with adequate dural and paraspinal muscle cover.

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