Osteology and Rheumatology · Vol. 4, No. 1 · 2025 · pp. 1–2 · e-ISSN 2996-5918

A Few Considerations on “A Rare Cause of Shoulder Pain Ganglion Cyst of the Acromioclavicular Joint”: A Letter to the Editor

Lee C. Tse, Zhi-Hong Zheng

Department of Orthopedic Surgery, National Defense Medical Center,Tri-Service General Hospital, Neihu 114,Taipei,TaiwanTaiwan
Department of Orthopedic Surgery, National Defense Medical Center,Tri-Service General Hospital, Neihu 114,Taipei,Taiwan; Department of Orthopedic Surgery, Hualien Armed Forces General Hospital,Taiwan, Republic of ChinaChina

DOI: https://doi.org/10.17140/orhoj-4-116 · Published 2025-09-11 · Licence: https://creativecommons.org/licenses/by/4.0 · © 2025 The Author(s)

Abstract

We are very interested in the article by Sarman et al.1 A rare cause of shoulder pain: Ganglion cyst of the acromioclavicular joint.1 Ganglion cyst often induces severe pain and impairs quality of life, even with multi-modal therapies. The ganglion cyst commonly develops along the tendons or joints. Ganglion cysts are typically round or oval shape and filled with a jellylike fluid. We appreciated the rare case report by Sarman et al.1 Sarman et al1 performed an image investigation to clarify the tissue content by an Xray and an magnetic resonance imaging (MRI) examination. They found a 10×8×5 cm mass which was homogenous fluid contained with a septum. And the lesion had several cysts in the T2 image. Although, it looked like a benign lesion as the author described, a painful mass raised the alarm. The possibility of malignant change is because of the lesion size which is bigger than 5 cm as well as a deep mass or one adhering to the fascia.2 Conversely, a mass that moves with the muscle tissues is probably superficial and less likely to be malignant.

Keywords: X-ray, T2 image, i (MRI), surgery

Open Journal PUBLISHERS Letter to the Editor A Few Considerations on “A Rare Cause of Shoulder Pain Ganglion Cyst of the Acromioclavicular Joint”: A Letter to the Editor 1 1,2* Lee C.Tse, MD ; Zhi-Hong Zheng, MD 1Department of Orthopedic Surgery, National Defense Medical Center,Tri-Service General Hospital, Neihu 114,Taipei,Taiwan 2Department of Orthopedic Surgery, Hualien Armed Forces General Hospital,Taiwan, Republic of China * *Corresponding author Zhi-Hong Zheng, MD Department of Orthopedic Surgery, National Defense Medical Center,Tri-Service General Hospital, Neihu 114,Taipei,Taiwan; Department of Orthopedic Surgery, Hualien Armed Forces General Hospital,Taiwan, Republic of China; E-mail: rara540@gmail.com Article information th th st Received: September 6 , 2022; Accepted: September 15 , 2022; Published: September 21 , 2022 Cite this article Tse LC, Zheng Z-H. A few considerations on “a rare cause of shoulder pain ganglion cyst of the acromioclavicular joint”:A letter to the editor. Osteol Rheumatol Open J. 2022; 4(1): 1-2. doi: 10.17140/ORHOJ-4-116 TO THE EDITOR tear untreated may not be sufficient for shoulder pain. Surgeons often use 50% of footprint tears as an indication for surgery for e are very interested in the article by Sarman et al.1 A rare PTRCT. This recommendation began with a classic 1999 article cause of shoulder pain: Ganglion cyst of the acromiocla- discussing 65 patients with tear size of 50% or more who were W 1 vicular joint. Ganglion cyst often induces severe pain and impairs treated with either arthroscopic acromioplasty alone or combined quality of life, even with multi-modal therapies. The ganglion cyst with mini-open rotator cuff repair.6 Although significant for the commonly develops along the tendons or joints. Ganglion cysts size of the cohort and follow-up, patients were not randomized to are typically round or oval shape and filled with a jellylike fluid. We acromioplasty versus repair, and there was no control group with- 1 1 appreciated the rare case report by Sarman et al.1 Sarman et al1 per- out repair. Thus, although the “50% rule” is commonly used to formed an image investigation to clarify the tissue content by an X- determine when root canal treatment (RCT) should be repaired, ray and an magnetic resonance imaging (MRI) examination. They the cutoff for a critical lesion is not well-defined. According to our found a 10×8×5 cm mass which was homogenous fluid contained experience, the acromio-humeral impingement which can be seen with a septum. And the lesion had several cysts in the T2 image. on the X-ray in abduction posture is a pain source in the shoulder Although, it looked like a benign lesion as the author described, a joint. Maybe treating the ganglion cyst only but left the rotator painful mass raised the alarm. The possibility of malignant change cuff alone was not sufficient for shoulder pain. We fully agree that is because of the lesion size which is bigger than 5 cm as well as a surgical excision improved the symptoms and function.

deep mass or one adhering to the fascia.2 Conversely, a mass that moves with the muscle tissues is probably superficial and less likely CONFLICT OF INTEREST to be malignant.3 The authors declare that they have no conflicts of interest. According to the X-ray, the acromion-humeral head in- terval was decreased, the humeral head was upper migrated, and

References

  1. SarmanHCelikMBalaMM. A rare cause of shoulder pain: incidence of partial thickness rotator cuff tear (PTRCT) is age Ganglion cyst of the acromioclavicular joint. Osteol Rheumatol Open dependent, with 6% of individuals younger than 40-years having J. 2016; 1(1): 20-22. doi: 10.17140/ORHOJ-1-107 an asymptomatic PTRCT, increasing to 26% of those older than 60-years.5 Non-surgical treatment of PTRCT includes oral and/or10.17140/orhoj-1-107 https://doi.org/10.17140/orhoj-1-107
  2. JohnsonCJPynsentPBGrimerRJ. Clinical features of soft tissubacromial anti-inflammatory medications, physical therapy, pain sue sarcomas. Ann R Coll Surg Engl. 2001; 83: 203-205. medications, and biologic modalities such as platelet-rich plasma injections. Patients with smaller tears have a good outcome with
  3. Rochwerger A, Mattei J-C. Management of soft tissue tumors non-surgical management of PTRCT. Leaving the rotator cuff of the musculoskeletal system. Orthop Traumatol Surg Res. 2018; cc cc Copyright 2022 by Zheng Z-H. This is an open-access article distributed under Creative Commons Attribution 4.0 International License (CC BY 4.0), which Osteol Rheumatol Open J. 2022; 4(1): 1-2. doi: 10.17140/ORHOJ-4-116 PUBLISHERS 104(1S): S9-S17. doi: 10.1016/j.otsr.2017.05.031 history of nonoperatively treated symptomatic rotator cuff tears in patients 60 years old or younger. Am J Sports Med. 2011; 39: 710- https://doi.org/10.17140/orhoj-4-116
  4. DimitriouDMazelPHochreiterB. Superior humeral head 714. doi: 10.1177/0363546510393944 migration might be a radiological aid in diagnosing patients with adhesive capsulitis of the shoulder. JSES Int. 2021; 5(6): 1086- 6. Kim Y-S, Kim S-E, Bae S-H et al. Tear progression of symptom- 1090. doi: 10.1016/j.jseint.2021.06.008 atic full-thickness and partial--thickness rotator cuff tears as measured by repeated MRI. Knee Surg Sports Traumatol Arthrosc. 201710.1177/0363546510393944 https://doi.org/10.1177/0363546510393944
  5. SafranOSchroederJBloomRWeilYMilgromC. Natural 25: 2073-2080. doi: 10.1007/s00167-016-4388-310.1007/s00167-016-4388-3 https://doi.org/10.1007/s00167-016-4388-3