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Surgery

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Thyroid & Adrenal

Question
75 out of 99
 

True about branchial arch derivatives



A Surgical excision of branchial sinus is always indicated

B Branchial arch abnormality most commonly arises from second branchial system.

C Branchial cyst more common sinus

D Branchial cyst present with respiratory obstruction in adult

Ans. B Branchial arch abnormality most commonly arises from second branchial system.

(REF. CLINICAL SURGERY S.DAS 6TH EDITION, )

a. The branchial apparatus develops during 2nd to 6th week of fetal life. At this stage, the neck is shaped like a hollow tube with circumferential ridges, termed as branchial arches.

b. Branchial arches develop into musculoskeletal and vascular components of head and neck.

c. First branchial cleft cyst are divided into type I and II. Type I cysts are located near external auditory canal type I cyst may be difficult to distinguish from a solid mass on clinical examination.

d. Type II cyst are associated with submandibular gland or found in anterior triangle of the neck.

e. The second branchial cleft cyst accounts for 95% of branchial anomalies.

f. Most frequently second branchial cleft cyst are identified along the anterior border of upper third of the sternocleidomastoid muscle and adjacent to the muscle.

g. Most branchial cyst are asymptomatic, but they may become infected treatment is conservative (i.e. no treatment) or surgical excision.

h. Branchial cyst may present with respiratory obstruction, but not very commonly have most appropriate ans is

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