- Email: [email protected]
Anatomical variation in arch of aorta: A case report
Abstracts / Journal of the Anatomical Society of India 65S (2016) S98–S142
suprarenal artery was originating from the left gonadal artery. Left gonadal artery took origin from the abdominal aorta in front and at the level of origin of the left renal artery. Besides this, the left renal vein passed obliquely downwards behind the abdominal aorta and drained into inferior vena cava. Retroaortic left renal vein may lead to unilateral hematuria, varicocele of pampiniform venous plexus in left side of scrotum and may interfere with the spermatogenesis in left testis. Conflicts of interest The author has none to declare. http://dx.doi.org/10.1016/j.jasi.2016.08.347
S109
H&E sections of a submandibular ganglion and its two roots suspended by the lingual nerve, with a portion of the submandibular gland were prepared from tissue obtained from an adult male cadaver during routine dissection. Ganglion cells were present – in the submandibular ganglion, in the hilum of the submandibular gland, and in the epineurium, perineurium and within the fascicles of lingual nerve in longitudinal sections. Most parasympathetic ganglia of the head and neck are cell bodies of neurons clumped together, to form tiny ganglia scattered in supporting tissue. The ganglion cells in the nerve, are probably myelencephalic neural crest cells arrested in their descent along the lingual nerve. Conflicts of interest
41
The author has none to declare.
Anatomical variation in arch of aorta: A case report
http://dx.doi.org/10.1016/j.jasi.2016.08.349
Debasis Bandopadhyay
43
Dept. of Anatomy, AFMC, Pune, India
Block vertebrae – A case report
The aortic arch lies wholly in the superior mediastinum. It begins when the ascending aorta emerges from the pericardial sac at the upper border of second right sternocostal joint and ends at vertebral level T 4/5 continuing as the descending thoracic aorta. Three branches arise from the convex side of the arch. However variation in the branching pattern occurs due to developmental changes in the pharyngeal arch system during embryonic period. The knowledge of these variations is important for radiological diagnosis and cardio-thoracic surgeries in this region. A variation in the aortic arch was noticed during routine undergraduate dissection. The cadaver was a female aged 70 years donated by next of kin after her natural death due to cardiac arrest. The arch showed 3 branches from left to right, first a common trunk (CT) giving rise to brachiocephalic trunk (BT) and left common carotid artery (LCCA), second branch of left vertebral artery (LVA) and third branch of left subclavian artery (LSA). The brachiocephalic trunk was also observed to be on left of midline and crossing the trachea from left to right. This variation must have resulted from failure of bifurcation of aortic sac leading to LCCA joining the aortic sac resulting in common trunk giving rise to BT and LCCA. The shift of the BT to the left of midline may be a compensatory mechanism to balance the abnormal origin. There could have been increased absorption of embryonic tissue between origin of LSA from aortic arch and origin of LVA resulting in LVA arising directly from the arch. These variation patterns must be known to surgeon to avoid complications during aortic instrumentation and minimizing risks due to iatrogenic damages during cardiothoracic surgeries.
Rashmi Bhardwaj Department of Anatomy, Medical College, Baroda, Gujarat, India Inappropriate vertebral fusion results in Block vertebrae or Spinal fusion or vertebral synostosis. Our aim was to report a case of thoracolumbar vertebral synostosis. During routine osteology demonstration at Medical College Baroda, we came across the presence of fused vertebrae at the level of T12, L1 & L2 with exostosis. We observed bodies of L1 & L2 vertebrae were in same plane but body of T12 was more anteriorly placed forming an abnormal curve. Body of L1 vertebra fused abnormally with posterior part of body of T12 vertebra leading to partial narrowing of vertebral canal with slight posterior inclination. Exostosis was seen in the form of abnormal ring like bony mass from the L1 vertebra, which fused with the anterior margin of the body of L2 vertebra, forming a sloping surface to compensate abnormal curve. On both the sides Zygapophysial joints between T12 & L1 vertebrae were absent. Inferior articular process of T12 vertebra fused abnormally with lamina of L1 vertebra with abnormal bony mass. Abnormal fusion of vertebrae in different regions of vertebral column may be asymptomatic or can lead to a variety of symptoms depending upon the degree of compression exerted by them on adjoining structures like spinal nerves, blood vessels or spinal cord. Block vertebrae result due to failure of segmentation of sclerotomes. The condition is associated with genitourinary, neurological and musculoskeletal abnormalities. Conflicts of interest
Conflicts of interest The author has none to declare. The author has none to declare. http://dx.doi.org/10.1016/j.jasi.2016.08.350 http://dx.doi.org/10.1016/j.jasi.2016.08.348 42
44
Ganglia in trunk of lingual nerve – A case report
Study of supracondylar spur of the humerus in Jharkhand population
S. Sreenivasan
Shilpa Singh
D Y Patil University School of Medicine, Nerul, Navi Mumbai, Maharashtra, India
Department of Anatomy, RIMS, Ranchi, Jharkhand, India
The study was planned to observe the distribution of ganglion cells of the submandibular ganglion.
Supracondylar spur is a bony projection about 2–20 mm in length, it occasionally projects from the anteromedial surface of the
suprarenal artery was originating from the left gonadal artery. Left gonadal artery took origin from the abdominal aorta in front and at the level of origin of the left renal artery. Besides this, the left renal vein passed obliquely downwards behind the abdominal aorta and drained into inferior vena cava. Retroaortic left renal vein may lead to unilateral hematuria, varicocele of pampiniform venous plexus in left side of scrotum and may interfere with the spermatogenesis in left testis. Conflicts of interest The author has none to declare. http://dx.doi.org/10.1016/j.jasi.2016.08.347
S109
H&E sections of a submandibular ganglion and its two roots suspended by the lingual nerve, with a portion of the submandibular gland were prepared from tissue obtained from an adult male cadaver during routine dissection. Ganglion cells were present – in the submandibular ganglion, in the hilum of the submandibular gland, and in the epineurium, perineurium and within the fascicles of lingual nerve in longitudinal sections. Most parasympathetic ganglia of the head and neck are cell bodies of neurons clumped together, to form tiny ganglia scattered in supporting tissue. The ganglion cells in the nerve, are probably myelencephalic neural crest cells arrested in their descent along the lingual nerve. Conflicts of interest
41
The author has none to declare.
Anatomical variation in arch of aorta: A case report
http://dx.doi.org/10.1016/j.jasi.2016.08.349
Debasis Bandopadhyay
43
Dept. of Anatomy, AFMC, Pune, India
Block vertebrae – A case report
The aortic arch lies wholly in the superior mediastinum. It begins when the ascending aorta emerges from the pericardial sac at the upper border of second right sternocostal joint and ends at vertebral level T 4/5 continuing as the descending thoracic aorta. Three branches arise from the convex side of the arch. However variation in the branching pattern occurs due to developmental changes in the pharyngeal arch system during embryonic period. The knowledge of these variations is important for radiological diagnosis and cardio-thoracic surgeries in this region. A variation in the aortic arch was noticed during routine undergraduate dissection. The cadaver was a female aged 70 years donated by next of kin after her natural death due to cardiac arrest. The arch showed 3 branches from left to right, first a common trunk (CT) giving rise to brachiocephalic trunk (BT) and left common carotid artery (LCCA), second branch of left vertebral artery (LVA) and third branch of left subclavian artery (LSA). The brachiocephalic trunk was also observed to be on left of midline and crossing the trachea from left to right. This variation must have resulted from failure of bifurcation of aortic sac leading to LCCA joining the aortic sac resulting in common trunk giving rise to BT and LCCA. The shift of the BT to the left of midline may be a compensatory mechanism to balance the abnormal origin. There could have been increased absorption of embryonic tissue between origin of LSA from aortic arch and origin of LVA resulting in LVA arising directly from the arch. These variation patterns must be known to surgeon to avoid complications during aortic instrumentation and minimizing risks due to iatrogenic damages during cardiothoracic surgeries.
Rashmi Bhardwaj Department of Anatomy, Medical College, Baroda, Gujarat, India Inappropriate vertebral fusion results in Block vertebrae or Spinal fusion or vertebral synostosis. Our aim was to report a case of thoracolumbar vertebral synostosis. During routine osteology demonstration at Medical College Baroda, we came across the presence of fused vertebrae at the level of T12, L1 & L2 with exostosis. We observed bodies of L1 & L2 vertebrae were in same plane but body of T12 was more anteriorly placed forming an abnormal curve. Body of L1 vertebra fused abnormally with posterior part of body of T12 vertebra leading to partial narrowing of vertebral canal with slight posterior inclination. Exostosis was seen in the form of abnormal ring like bony mass from the L1 vertebra, which fused with the anterior margin of the body of L2 vertebra, forming a sloping surface to compensate abnormal curve. On both the sides Zygapophysial joints between T12 & L1 vertebrae were absent. Inferior articular process of T12 vertebra fused abnormally with lamina of L1 vertebra with abnormal bony mass. Abnormal fusion of vertebrae in different regions of vertebral column may be asymptomatic or can lead to a variety of symptoms depending upon the degree of compression exerted by them on adjoining structures like spinal nerves, blood vessels or spinal cord. Block vertebrae result due to failure of segmentation of sclerotomes. The condition is associated with genitourinary, neurological and musculoskeletal abnormalities. Conflicts of interest
Conflicts of interest The author has none to declare. The author has none to declare. http://dx.doi.org/10.1016/j.jasi.2016.08.350 http://dx.doi.org/10.1016/j.jasi.2016.08.348 42
44
Ganglia in trunk of lingual nerve – A case report
Study of supracondylar spur of the humerus in Jharkhand population
S. Sreenivasan
Shilpa Singh
D Y Patil University School of Medicine, Nerul, Navi Mumbai, Maharashtra, India
Department of Anatomy, RIMS, Ranchi, Jharkhand, India
The study was planned to observe the distribution of ganglion cells of the submandibular ganglion.
Supracondylar spur is a bony projection about 2–20 mm in length, it occasionally projects from the anteromedial surface of the