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:
Back swelling
Skin & Subcutaneous Tissue: Skin thickness appears normal. Subcutaneous tissue shows normal echotexture with no edema or collection.
Muscle Layers:
A well-defined hyperechoic lesion is noted within the latissimus dorsi muscle plane,
measuring approximately 5.6 × 2.8 cm.
The lesion demonstrates fatty echotexture with linear echogenic striations.
No invasion of adjacent structures or muscle disruption is seen.
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 observed within the lesion on Doppler evaluation.
Impression: Features are suggestive of intramuscular (latissimus dorsi muscle) lipoma.
Recommendation: Clinical correlation is advised. MRI may be considered for further evaluation of extent and confirmation. Follow-up is recommended if symptomatic or showing 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 Latissimus Dorsi Muscle Lipoma – Back Lump (Dorsal Wall Ultrasound Case Study).
This evaluation was performed using Ultrasonography (USG), enabling real-time assessment of deep musculoskeletal 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
“Latissimus Dorsi 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 latissimus dorsi muscle, typically along the
posterolateral aspect of the dorsal thoracic wall, consistent with an intramuscular lipoma.
The lesion shows homogeneous fatty echotexture with fine internal linear striations,
aligned parallel to the surrounding muscle fibers. No internal vascularity is observed on Doppler imaging,
and there are no features suggestive of invasion into adjacent structures.
Ultrasonography is a reliable, non-invasive imaging modality for evaluating deep soft tissue lesions,
particularly useful in distinguishing benign fatty tumors from other soft tissue pathologies.
These findings are intended for educational demonstration only.
Definitive diagnosis and clinical management should be based on appropriate clinical correlation and further imaging if indicated.
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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