Spontaneous regression of pulmonary metastases from breast angiosarcoma

Spontaneous Regression of Multiple Pulmonary Metastasis of Sacral Chordoma: A Case Report

CASE

A 53-year-old man was referred to our institution for the treatment of sacral chordoma and underwent a wide resection. Multiple lung metastases were observed in both the lungs, a year after the surgery, and the diagnosis was confirmed by biopsy. The patient refused treatment, and the lesions continued to increase in size gradually. However, 3 years and 6 months after the surgery, computed tomography of both the lungs showed spontaneous regression of the lesions without any obvious causes. The metastatic lung lesions had disappeared at the final follow-up, 7 years and 5 months after the multiple pulmonary metastases were diagnosed.

CONCLUSION

We report the first case of spontaneous regression of pathologically proven pulmonary metastases of a sacral chordoma.

Complete Spontaneous Regression of Lung Metastases after Resection of CIC-Rearranged Sarcoma: A Case Report

The vast majority of patients with soft tissue sarcomas (STS) of the trunk and bilateral lung metastases at diagnosis are considered incurable. These tumors have poor prognosis as only a palliative therapeutic approach can be offered to patients. We report on an extremely rare case in which bilateral lung metastases disappeared spontaneously following surgical resection of the primary CIC-rearranged sarcoma with no addition of chemotherapy or any other systemic therapy. A 53-year-old female presented with a rapidly swelling mass on her back. A magnetic resonance imaging scan of the chest revealed a large soft tissue mass on the posterior chest wall and bilateral lung metastases. Soon after stereotactic core-needle biopsy confirmation of round-cell sarcoma, the patient underwent surgery of the primary tumor as it started to be increasingly symptomatic. The resected specimen was pathologically diagnosed a poorly differentiated grade 3 sarcoma. Approximately 1 month later, a new CT scan revealed that the lung metastases were smaller and some of them had completely disappeared. Shortly afterward, the patient started adjuvant external beam radiotherapy of the tumor bed for 14 months. During the last follow-up visit, the patient confirmed no evidence of disease for 35 months postoperatively. In parallel, a histological study of pulmonary nodules, molecular analyses of the tumor, and a comprehensive study of the patient's immunophenotype were performed to gain some additional insights in the potential causes of this rare phenomenon.

Spontaneous Regression of Epithelioid Angiosarcoma in a Young Woman

A 20-year-old Japanese woman with a history of pulmonary atresia was referred to our hospital after the detection of an abnormal mass in the right lung and mediastinal lymphadenopathy. A cytological specimen obtained by transbronchial brushing indicated that the pathological diagnosis was non-small cell lung cancer. During the follow-up period, the tumor spontaneously regressed. At four months after the diagnosis, she experienced sudden bleeding from the small intestine. The histological characteristics of the small intestine tumor were compatible with the cytological characteristics of the lung tumor. Detailed immunohistochemical analyses led to a final diagnosis of epithelial angiosarcoma of the small intestine, which might have formed metastatic lesions in the lung.

Spontaneous regression of chemotherapy-resistant metastases from a scalp angiosarcoma

Angiosarcomas are rare malignant tumors derived from endothelial cells and occur most commonly in the scalp and the face. The prognosis is poor. Therefore, spontaneous regression of angiosarcoma is a rare phenomenon.We describe a case of a 73-year-old man with multiple metastatic angiosarcoma.In the present case, weekly paclitaxel therapy had an effect, but could not be continued because of interstitial pneumonia (IP). Weekly docetaxel therapy did not have an effect, but further chemotherapy was not carried out because aggravation of the IP was a concern.The primary lesion and other metastatic lesions were inconspicuous on the positron emission tomography/computed tomography scan performed in one year and two months after best supportive care.We reported an extremely rare case of spontaneous regression of therapy-resistant metastases of angiosarcoma that has remained controlled for 40 months since the initial diagnosis.

Spontaneous regression of breast angiosarcoma after conservative treatment with radiotherapy: a case report and review of the literature

Angiosarcoma of the breast is a rare disease, and approximately 1 % of all affected patients are treated with breast-conserving therapy (BCT) and radiotherapy (RT) for primary breast cancer. The prognosis for this tumor is quite dismal, with high rates of recurrence and poor overall survival. This report presents the case of a 73-year-old female who underwent BCT followed by RT for left breast carcinoma 18 years previously. The patient visited the hospital with a complaint of a new mass in the left breast. The lesion initially decreased in size; however, it subsequently began to rapidly enlarge. A core needle biopsy of the mass was performed under ultrasonography, with a diagnosis of a spindle cell sarcoma, most conceivably an angiosarcoma, originating from the left breast, suspected to be induced by RT. The tumor was resected with the surrounding skin, and immunohistochemically diagnosed as angiosarcoma of the left breast, without evidence of breast cancer in any lesion, suggesting that RT induced the tumor formation. We herein report this rare case and the ultrasound imaging findings.

Short-term spontaneous regression of myxofibrosarcoma in the scapular region

Spontaneous regression of cancer is a well-known but rare phenomenon, and it is extremely rare for sarcomas. The current case is an 85-year-old woman with a multinodular lesion diagnosed as myxofibrosarcoma in the scapular region. The maximum size of the tumor at the initial visit was 10 cm, and it decreased to less than 2 cm without any treatment. After a period of regression of about 6 months, the tumor began to grow, and resection was performed. No prior case of spontaneous regression has been reported in myxofibrosarcoma or other primary sarcomas. Interestingly, the regression took place after the occurrence of pneumonia, suggesting a possible relationship.