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A case of intramuscular myxoma presenting as a swollen shoulder: a case report.

Kemah B, Soylemez MS, Ceyran B, Şenol S, Mutlu S, Özkan K - J Med Case Rep (2014)

Bottom Line: They may occur less frequently in aponeurotic tissues, bone, genitourinary tract, subcutaneous tissue and skin.The case described here is a 44-year-old Turkish woman who presented with the complaint of a swelling in her right shoulder.In the differential diagnosis, reactive lesions, myxoid nodular fasciitis and low -grade myxoid sarcomas should be kept in mind, upon which the treatment should be planned.

View Article: PubMed Central - PubMed

Affiliation: Orthopaedics and Traumatology Department, İ, Medeniyet University Göztepe Training and Research Hospital, İstanbul, Turkey. bahattinkemah.md@gmail.com.

ABSTRACT

Introduction: Intramuscular myxoma is a rare benign mesenchymal tumor. Myxomas most commonly occur in the heart. They may occur less frequently in aponeurotic tissues, bone, genitourinary tract, subcutaneous tissue and skin.

Case presentation: The case described here is a 44-year-old Turkish woman who presented with the complaint of a swelling in her right shoulder. A preoperative magnetic resonance imaging revealed a lobular contoured mass lesion in her deltoid muscle. The mass was marginally excised and pathology revealed intramuscular myxoma.

Conclusion: Intramuscular myxoma of the deltoid muscle is a very rare benign tumor. In the differential diagnosis, reactive lesions, myxoid nodular fasciitis and low -grade myxoid sarcomas should be kept in mind, upon which the treatment should be planned.

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Related in: MedlinePlus

At the periphery of the lesion, the skeletal muscle adjacent to the tumor is atrophic. Tumor infiltration of muscle fibers can be monitored (hematoxylin and eosin ×200).
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Fig3: At the periphery of the lesion, the skeletal muscle adjacent to the tumor is atrophic. Tumor infiltration of muscle fibers can be monitored (hematoxylin and eosin ×200).

Mentions: A microscopic examination showed that the mass consisted of a small number of spindle or stellate cells, a small number of vessels, thin collagen fibers and a small number of loose reticular fibers embedded in an abundant myxoid stroma (Figure 2). The cells had a small, pyknotic slightly hyperchromatic nucleus and scanty cytoplasm. Some presented multiple stellate-shaped cytoplasmic extensions. Cellular pleomorphism, cellularity and vascularity were low. There was no mitosis, necrosis or cystic degeneration. At the periphery of the lesion, the skeletal muscle adjacent to the tumor was atrophic with interspersed edema fluid or infiltrated tumor cells (Figures 3 and4).Figure 2


A case of intramuscular myxoma presenting as a swollen shoulder: a case report.

Kemah B, Soylemez MS, Ceyran B, Şenol S, Mutlu S, Özkan K - J Med Case Rep (2014)

At the periphery of the lesion, the skeletal muscle adjacent to the tumor is atrophic. Tumor infiltration of muscle fibers can be monitored (hematoxylin and eosin ×200).
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4301402&req=5

Fig3: At the periphery of the lesion, the skeletal muscle adjacent to the tumor is atrophic. Tumor infiltration of muscle fibers can be monitored (hematoxylin and eosin ×200).
Mentions: A microscopic examination showed that the mass consisted of a small number of spindle or stellate cells, a small number of vessels, thin collagen fibers and a small number of loose reticular fibers embedded in an abundant myxoid stroma (Figure 2). The cells had a small, pyknotic slightly hyperchromatic nucleus and scanty cytoplasm. Some presented multiple stellate-shaped cytoplasmic extensions. Cellular pleomorphism, cellularity and vascularity were low. There was no mitosis, necrosis or cystic degeneration. At the periphery of the lesion, the skeletal muscle adjacent to the tumor was atrophic with interspersed edema fluid or infiltrated tumor cells (Figures 3 and4).Figure 2

Bottom Line: They may occur less frequently in aponeurotic tissues, bone, genitourinary tract, subcutaneous tissue and skin.The case described here is a 44-year-old Turkish woman who presented with the complaint of a swelling in her right shoulder.In the differential diagnosis, reactive lesions, myxoid nodular fasciitis and low -grade myxoid sarcomas should be kept in mind, upon which the treatment should be planned.

View Article: PubMed Central - PubMed

Affiliation: Orthopaedics and Traumatology Department, İ, Medeniyet University Göztepe Training and Research Hospital, İstanbul, Turkey. bahattinkemah.md@gmail.com.

ABSTRACT

Introduction: Intramuscular myxoma is a rare benign mesenchymal tumor. Myxomas most commonly occur in the heart. They may occur less frequently in aponeurotic tissues, bone, genitourinary tract, subcutaneous tissue and skin.

Case presentation: The case described here is a 44-year-old Turkish woman who presented with the complaint of a swelling in her right shoulder. A preoperative magnetic resonance imaging revealed a lobular contoured mass lesion in her deltoid muscle. The mass was marginally excised and pathology revealed intramuscular myxoma.

Conclusion: Intramuscular myxoma of the deltoid muscle is a very rare benign tumor. In the differential diagnosis, reactive lesions, myxoid nodular fasciitis and low -grade myxoid sarcomas should be kept in mind, upon which the treatment should be planned.

Show MeSH
Related in: MedlinePlus