Intra-articular angioleiomyoma of the knee with an atypical finding on gadolinium-enhanced magnetic resonance imaging: a case report

Fukawa, Taisuke; Akatsu, Yorikazu; Sasho, Takahisa

doi:10.1186/1752-1947-8-238

Cited by 7 publications

(2 citation statements)

References 12 publications

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“…Angioleiomyoma can occur anywhere in the body and is most often seen in the extremities, particularly the lower limbs [ 8 ], but very rare in the knee joint. Al-Jabri et al reported a case of an angioleiomyoma presented with recurrent pain and a soft tissue swelling at the posteromedial aspect of right knee [ 7 ].…”

Section: Discussionmentioning

confidence: 99%

The diagnosis and arthroscopic treatment of angioleiomyoma presenting loose body in the knee joint: two case reports

Cao

et al. 2018

BMC Musculoskelet Disord

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BackgroundAngioleiomyoma is a very rare benign solitary soft tissue neoplasm originating from smooth muscle layer of blood vessels. The tumor is usually located in the subcutis or the superficial fasciae, but less often in the deep fasciae, especially rare in the knee joint cavity. Diagnosis is frequently delayed or misdiagnosed as loose body or anterior knee pain because of its rare occurrence and poor awareness of physicians. Few studies have presented intra-articular angioleiomyoma and such cases become rarer and more difficult to diagnose when it presents as loose body.Case presentationTwo patients, a middle-aged man and an old woman, presented to our outpatient clinic with persistent anterior knee pain and both of them suffered from a solitary mass in the right knee that had slowly enlarged. One of two patients showed negative in the routine radiographic imaging and the other showed a “loose body” beside the lateral femoral condyle in the knee. MRI showed both a well-demarcated intra-articular mass of isointense signal to muscle on T1-weighted images and heterogeneous intensity on T2-weighted images. Their tumors were excised under arthroscopy finally, with the pathological results revealed vascular leiomyomas. They both recovered well with pain free after operation and no signs of recurrence were seen at the 7-year follow-up.ConclusionsThis case report illustrates the atypical locations of angioleiomyoma in the knee joint should arouse our attention and be included in the differential diagnosis of nodular lesions mimicking loose bodies.

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Section: Discussionmentioning

confidence: 99%

The diagnosis and arthroscopic treatment of angioleiomyoma presenting loose body in the knee joint: two case reports

Cao

et al. 2018

BMC Musculoskelet Disord

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“…The incidence of angioleiomyoma is estimated about 5% among all soft tissue tumors with the lower limbs being most commonly affected [2]. However, the presence of the neoplasm at the knee joint is very rare and only few cases are reported in the literature [6,7,8,9,10,11,12]. Its clinical appearance seems more common in middle-aged people with females being affected almost twice as often [2,8,13,14,15,16].…”

Section: Introductionmentioning

confidence: 99%

Angioleiomyoma in the posterior knee: A case report and literature review

et al. 2017

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The authors present a case of angioleiomyoma situated in the posterior knee. A 47-year-old Caucasian woman presented in 2011 with recurrent stabbing pain on the lateral aspect of her right knee. She reported having pain for the last 6years. She had no history of trauma. In 2008 she was treated with a diagnostic arthroscopy and transposition of the tibial tuberosity, with no benefit to her symptoms. Electromyography of the lower limbs showed asymmetry of the amplitude of sensitive action potential of the superficial fibular nerve. Based on the clinical suspicion of entrapment of the common fibular nerve at its bifurcation, a surgical exploration was performed, but pain persisted. In 2014, ultrasonography localized at the trigger point showed a solid ovular formation of 1cm in diameter situated on the posterior aspect of the external femoral condyle in proximity to the joint capsule, which was confirmed by magnetic resonance imaging (MRI). Surgical excision of the 1-cm diameter tumor mass relieved the symptoms immediately and permanently. Histology evidenced the presence of a solid-type angioleiomyoma. The presence of an angioleiomyoma at the knee joint is very rare and few cases are reported in the literature. To the authors' knowledge this is the first time an angioleiomyoma in the posterior knee has been described. In case of unexplained and persistent pain in and around the knee, clinicians should be aware of the atypical locations of this tumor, considering that its surgical excision alone may relieve symptoms permanently.

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Pathology, Genetics, and Molecular Biology

Siozopoulou

2023

Medical Radiology

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Intra-articular angioleiomyoma of the knee with an atypical finding on gadolinium-enhanced magnetic resonance imaging: a case report

Cited by 7 publications

References 12 publications

The diagnosis and arthroscopic treatment of angioleiomyoma presenting loose body in the knee joint: two case reports

The diagnosis and arthroscopic treatment of angioleiomyoma presenting loose body in the knee joint: two case reports

Angioleiomyoma in the posterior knee: A case report and literature review

Pathology, Genetics, and Molecular Biology

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