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Related Experiment Video

Updated: May 17, 2026

Dissection and Flat-mounting of the Threespine Stickleback Branchial Skeleton

Dissection and Flat-mounting of the Threespine Stickleback Branchial Skeleton

Published on: May 7, 2016

Second branchial sinus - A case report.

N Hemaraju¹, S K Nanda, B Shankar

¹Dept of ENT, Sree Siddhartha Medical Colllege&PG Reaserch Center. Tumkur, Karnataka.

Indian Journal of Otolaryngology and Head and Neck Surgery : Official Publication of the Association of Otolaryngologists of India

|November 3, 2012

Summary

This summary is machine-generated.

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Branchial apparatus anomalies can lead to branchial sinus or fistula formation due to incomplete fusion of embryonic structures. This case highlights a common anomaly of the second branchial arch in an 18-year-old male.

Area of Science:

Embryology
Anatomy
Surgical Pathology

Background:

The branchial apparatus develops from six pairs of mesodermal arches.
Pharyngeal pouches and branchial clefts form from endodermal and ectodermal invaginations, respectively.
Incomplete fusion of these structures can result in congenital anomalies like branchial sinuses or fistulas.

Purpose of the Study:

To present a case of branchial sinus.
To emphasize the commonality of second branchial arch anomalies.

Main Methods:

Case report presentation.
Clinical case review.

Main Results:

An 18-year-old male presented with a branchial sinus.

Keywords:

Branchial Sinus

Related Experiment Videos

Last Updated: May 17, 2026

Dissection and Flat-mounting of the Threespine Stickleback Branchial Skeleton

Dissection and Flat-mounting of the Threespine Stickleback Branchial Skeleton

Published on: May 7, 2016

This anomaly is a manifestation of a second branchial arch malformation.

Conclusions:

Branchial sinuses are congenital anomalies resulting from developmental errors in the branchial apparatus.
Second arch anomalies are the most frequent type, as illustrated by this case.