Related Experiment Video
Updated: Jun 14, 2025

Robot-Assisted Transcanal Endoscopic Ear Surgery for Congenital Cholesteatoma
Published on: December 15, 2023
Adjoining Auricular Endochondral Pseudocysts in a Child
Konstantinos Kourelis1, Anastasios Goulioumis2, Zoi Stamou3
1Department of Otolaryngology, Children's Hospital of Patras "Karamandaneio", Erythrou Stavrou 40st., Patras, 26331 Greece.
Endochondral pseudocysts of the pinna are rare, fluid-filled ear cartilage spaces. This case study details surgical deroofing in a 10-year-old boy to treat bilateral auricular pseudocysts.
Area of Science:
- Otolaryngology
- Dermatology
- Pediatric Surgery
Background:
- Endochondral pseudocysts of the pinna are uncommon intracartilaginous, fluid-filled lesions.
- The etiology of these auricular pseudocysts remains largely unknown.
Purpose of the Study:
- To present a rare case of bilateral endochondral pseudocysts of the pinna in a pediatric patient.
- To describe the surgical management balancing cure and tissue preservation.
Main Methods:
- Case report of a 10-year-old boy with bilateral auricular pseudocysts.
- Surgical intervention involving paired deroofing of the pseudocysts.
Main Results:
- Successful surgical deroofing of two pseudocysts located on the cartilaginous lamina of the pinna.
- Achieved a balance between complete cyst removal and maintaining adequate auricular structural support.
Conclusions:
- Surgical deroofing is a viable treatment option for endochondral pseudocysts of the pinna.
- Careful surgical technique is essential to ensure both therapeutic efficacy and cosmetic/functional preservation of the ear cartilage.
Related Concept Videos
Bone Formation by Endochondral Ossification
Structural Joints: Cartilaginous Joints
There are two types of cartilaginous joints:
Synchondrosis
A synchondrosis ("joined by cartilage") is a cartilaginous joint where bones are connected by hyaline cartilage. Synchondrosis may be temporary...
Development of the Limb Synovial Joints
The mesenchymal stem cells differentiate into chondrocytes that form the hyaline cartilage, and later the cartilaginous model of the bone. This model further transforms into a bone. This process is known as endochondral ossification.
During development, the limbs...
Growth of Cartilage and Bone Tissue
Changes in the Appendicular Skeleton with Age
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
The Auditory Ossicles
The aptly named stapes look very much like a stirrup. The three ossicles are unique to mammals, and each plays a role in...

