Dorsal Wall Ultrasound
Technique:
Real-time ultrasound examination of the dorsal wall was performed using a
high-frequency linear transducer (7–12 MHz).
Systematic evaluation of the posterior thoraco-lumbar region was carried out
in longitudinal and transverse planes.
Skin, subcutaneous tissue, muscle layers, and underlying soft tissue structures
were assessed.
Clinical indication:
Suspected soft tissue lesion
Skin & Subcutaneous Tissue: Skin thickness appears normal. Subcutaneous tissue shows normal echotexture with no edema or collection.
Fascial Planes: Fascial layers are intact with no evidence of fluid tracking or disruption. Soft Tissue: No additional focal soft tissue mass, cystic lesion, or abscess is seen. Vascularity: No internal vascularity is noted within the lesion on Doppler evaluation.
Impression:
Well-defined intramuscular hyperechoic lesion within the trapezius muscle,
showing characteristic sonographic features of a lipoma.
Features are suggestive of intramuscular (trapezius muscle) lipoma.
Recommendation: Clinical correlation is advised. MRI may be considered for further characterization and confirmation. Follow-up is recommended if the lesion is symptomatic or shows interval increase in size.
Kindly Note:
Limitations / Technical Factors:
Ultrasound evaluation is limited for deep-seated lesions and bony structures.
Clinical correlation and further imaging (MRI / CT) may be required
depending on clinical suspicion.
• This report is not valid for medico-legal purposes.
End of Case Study
You have reached the end of this Trapezius Muscle Lipoma – Back Lump (Dorsal Wall Ultrasound Case Study).
This evaluation was performed using Ultrasonography (USG), allowing real-time assessment of superficial and intramuscular soft tissue structures.
Content is intended for educational, training, and clinical reference purposes only.
Declaration:
I, R. K. Mouj, declare that the material presented in this case study titled
“Trapezius Muscle Lipoma – Dorsal Wall (Back Lump) on Ultrasonography (USG)”
has been prepared solely for educational and academic purposes.
The findings demonstrate a well-defined, hyperechoic lesion located within the
intramuscular plane of the trapezius muscle, typically in the
upper posterior dorsal region extending from the cervical to upper thoracic level,
consistent with an intramuscular lipoma.
The lesion exhibits homogeneous fatty echotexture with internal linear striations,
oriented parallel to the surrounding muscle fibers. No internal vascularity is noted on Doppler imaging,
and there is no evidence of infiltration into adjacent soft tissues.
Ultrasonography is an effective, non-invasive modality for evaluating superficial and deep musculoskeletal lesions,
aiding in differentiation of benign fatty tumors such as lipoma from other soft tissue pathologies.
These findings are intended for educational demonstration only.
Final diagnosis and management should be based on clinical correlation and further imaging if required.
Author: ____________________
Name: R. K. Mouj [Radio-imaging Technologist]
Domain: Diagnostic Sonography & Musculoskeletal Imaging
Modality: Ultrasonography (USG)
Platform: SonoAcademy
Supervisor / Guide: Department Radiologist
Department: Radiology
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