Pulmonary benign metastasizing leiomyoma presented as acute respiratory distress

Concurrent Benign Metastasizing Leiomyoma in the Abdominal Wall and Pelvic Cavity: A Case Report and Review of the Literature

Benign metastatic leiomyoma (BML) is a histologically benign disease with invasive biological behavior. Most patients are women of childbearing age with a history of uterine leiomyoma. The progress of the disease is relatively slow, the prognosis is good, and most patients can survive for a long time. The lung is the common metastatic site, and BML with metastatic lesions outside the lung is very rare. A 37-year-old woman with multiple BML in the abdominal wall and pelvic cavity after uterine leiomyoma surgery was admitted to our hospital. Combined with the clinical data of this case and reviewing the relevant literature, this paper discusses the pathological characteristics, diagnosis, differential diagnosis, and treatment of BML.

Prolonged response with bevacizumab in a patient with benign metastasizing leiomyomatosis

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Benign metastasizing leiomyomatosis (BML) is a rare condition.

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Treatment options have traditionally included surgical resection or hormonal based therapy.

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Traditional chemotherapy for BML is ineffective.

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Our patient has had a prolonged response of stable disease with the anti-VEGF therapy of bevacizumab.

Benign Metastasizing Leiomyoma of the Uterus: Rare Manifestation of a Frequent Pathology

Benign Metastasizing Leiomyoma (BML) is a rare condition with few cases reported in the literature. It is usually incidentally diagnosed several years after a primary gynecological surgery for uterine leiomyoma. Differential diagnosis of BML is complex requiring an extensive work-up and exclusion of malignancy. Here, we report two cases of BML based on similarity of histopathological, immunohistochemical, and genetic patterns between lung nodules and uterine leiomyoma previously resected, evidencing the variability of clinical and radiological features of BML. We highlight the importance of 19q and 22q deletions as highly suggestive of BML. These findings are particularly relevant when there is no uterine sample for review.

Long-term outcomes of surgical treatment for intravascular leiomyomatosis

BACKGROUND

Intravascular leiomyomatosis (IVL) is relatively rare. The optimal surgical method and long-term outcomes are not completely understood.

METHODS

Medical records between 2007 and 2017 in our hospital were analyzed to identify IVL cases with surgical intervention. Their medical records, operative details, and follow-up were collected by chart review and telephone communication.

RESULTS

Eight patients with IVL were included in the study, accounting for 0.26% of all uterine leiomyoma cases. Primary IVL was confined to pelvic cavity in three patients, extended to the inferior vena cava (IVC) below renal vein in one, reached IVC and right atrium in three, and reached main pulmonary artery in one. One-stage operation was performed for seven patients. Cardiopulmonary bypass was done in four patients, and aortic cross-clamp and temporary circulatory arrest was performed in two patients. None of the four patients with intrapulmonary tumors received concomitant pulmonary tumor resection. There was no operative mortality and four morbidities, including ureter injury (2), bladder injury (1), and femoral vein thrombosis (1). During follow-up, two patients exhibited local recurrence of the tumor in the pelvis, and one patient had rapidly growing intrapulmonary tumor three months post-operatively. Intrapulmonary tumors in the other three patients remained stationary at 6, 84, and 120 months post-operatively.

CONCLUSION

One-stage operation to completely remove IVL is feasible and with good long-term outcomes, which is recommended if the patient can tolerate the operation. Concomitant intrapulmonary tumors can be followed up watchfully except when associated with pleural effusion or the pathology indicating trend of increasing malignancy.

Pulmonary metastasectomy in uterine malignancy: outcomes and prognostic factors

Metastatic uterine cancer is a form of systemic disease. As for other solid tumours, it is advocated by some authors that in selected patients, lung metastasectomy may play a role in long-term disease control. The practice of lung metastasectomy is however open to criticism as there is lack of convincing evidence, and over-encouraging outcomes may be attributed to intrinsic selection bias. The case of metastatic uterine tumours is reviewed in the light of the available literature, in order to identify common patterns and prognostic factors that may influence and determine an individualised and informed patient decision.

Pulmonary benign metastasizing leiomyoma presented as acute respiratory distress

Benign metastasizing leiomyoma (BML) is a very rare condition and is characterized by the presence of benign smooth muscle tumours in organs distant from the uterus, most commonly the lung. It generally affects women of reproductive age and prognostic is usually excellent. However, the course of the disease is unpredictable. We report here the case of a 76‐year‐old woman with a previous medical history of uterine benign leiomyomas in whom BML was acutely revealed by a respiratory distress due to voluminous pulmonary and pleural leiomyomas requiring surgical extraction. Clinical evolution was remarkable by resistance to medical treatment and development of rare bone localization.

BML is a contradictory entity characterized by benign histological features but with metastatic potential. Pulmonologists as well as oncologists in charge of patients with multiple pulmonary nodules and a history of uterine leiomyoma should be aware of this potential diagnosis in order to implement appropriate diagnostic procedures for this benign tumour.