Long-term survival in a patient with repeated resections for lung metastasis after hepatectomy for ruptured hepatocellular carcinoma: a case report
Tumor rupture and pulmonary metastasis in patients with hepatocellular carcinoma are both associated with poor prognosis and treatment strategies are controversial.
Here we report a 50-year-old man with survival of over 90 months after undergoing an extended right lobectomy for a ruptured hepatocellular carcinoma and then repeated resections for pulmonary metastasis during the followup period.
This case report shows that surgical resection can be an effective treatment for patients with both ruptured hepatocellular carcinoma and pulmonary recurrences.
KeywordsLung Metastasis Pulmonary Metastasis Wedge Resection Intrahepatic Recurrence Pulmonary Metastasectomy
Hepatocellular carcinoma (HCC) is the most common primary hepatic tumor and one of the most common cancers worldwide. Spontaneous rupture is a life-threatening complication of HCC. The overall incidence of spontaneous rupture of HCC varies from 5% to 26%, with a mortality rate of up to 67%, especially in patients with poor liver function [1, 2, 3, 4].
The treatment of a ruptured HCC is controversial. Previous studies have suggested that emergency liver resection is feasible in patients with a small tumor and satisfactory liver function (Child-Pugh A or B grade). Surgical resection is currently the only way to achieve long-term survival .
The lung is the most common site of metastasis in patients with HCC. These are often unresectable as most pulmonary metastases are multiple . Nevertheless, some studies have revealed that surgical resection of pulmonary metastases from HCC may prolong survival in selected patients [7, 8, 9]. Ruptured HCC often exacerbates the risk of disseminated intraperitoneal metastases, and previous studies have suggested long-term survival may be possible with aggressive surgical treatment, even if intraperitoneal metastases develop [10, 11]. However, to our knowledge there has been no report of a patient who has undergone resections of pulmonary metastasis after hepatectomy for a ruptured HCC. Here we report a rare case of long-term survival after three pulmonary metastasectomies following hepatectomy for a ruptured HCC.
The patient underwent a right extended lobectomy, with partial resection of the diaphragm (about 4 × 4 cm2) and cholecystectomy, on 26 February 2000. The tumor was resected with margins greater than or equal to 1 cm. Six hundred cubic centimetres of bloody ascites were removed during surgery.
The patient's postoperative course was smooth and he was discharged on 13 March 2000. After surgery, he had regular followups with serum alpha-fetoprotein levels, chest radiographs, and abdominal ultrasonography every three months in our hospital. A small intrahepatic recurrence was found and treated twice by ultrasound-guided percutaneous alcohol injection.
The patient presented with mild hemoptysis 30 months after the hepatectomy, and follow-up chest CT demonstrated a metastasis in the right lower lobe the of lungs. The metastasis was removed with wedge resection measuring 2 × 1 × 1 cm3. Histopathological examination confirmed the presence of metastatic HCC (Figure 2b).
A follow-up chest radiograph and CT revealed a 2.9 cm solitary metastasis in the right upper lobe of the lung without any sign of liver recurrence 52 months after hepatectomy. A wedge resection of the right upper lobe of the lung was performed through a thoracotomy and the tumor was confirmed as a metastasis of HCC.
No intrahepatic recurrence of HCC was found after the last percutaneous alcohol injection of the liver and the patient has remained disease-free for 10 months since the last resection of pulmonary metastases, i.e. 90 months after the initial hepatectomy for a ruptured HCC.
The exact mechanism of spontaneous HCC rupture is still unknown although hypotheses include rapid growth of tumor with necrosis, erosion of a vessel, occlusion of the hepatic veins by a tumor thrombus, and coagulopathy . The prognosis of ruptured HCC is poor because many patients have advanced disease at the time of rupture and may also have cirrhosis. Malignant cells sometimes disseminate into the peritoneal cavity contributing to poor prognosis . There have been few reports of successful resection of peritoneal and pleural disseminated metastases caused by a ruptured HCC [11, 13].
In our patient, HCC with direct invasion to the diaphragm was seen and was resected with clear margins, and intrahepatic recurrence was controlled by local ablation. Pulmonary metastases were diagnosed 30, 52, and 80 months after hepatectomy and were removed by repeated wedge resections.
The lung is the most common site for extrahepatic spread of HCC and leads to a poor prognosis . Some authors suggest that an extrahepatic metastasis should be treated medically . Previous literature described four criteria for pulmonary metastasectomy:  the patient must be a good risk for surgical intervention;  the primary malignancy must be controlled;  there should be no other extrapulmonary metastasis, or, if present, it can be controlled by surgery or another treatment modality; and  the pulmonary metastases are believed to be completely resectable [16, 17].
Some reports support the effectiveness of pulmonary resection of metastases from HCC. Tomimaru et al.  reported that surgical resection for pulmonary metastasis from HCC is beneficial on the condition that the number of lung metastases is limited to one or two, and any intrahepatic recurrence is well managed.
Factors for good prognosis after pulmonary metastasectomy of HCC include a patient's disease-free interval greater than 12 months and alpha-fetoprotein levels less than 500 ng/ml . For our patient, the number of lung metastases during the third metastasectomy was two, and his alpha-fetoprotein levels returned to normal levels soon after the operation.
Few reports described long-term survival after resection of pulmonary metastases from HCC . Our case report suggests that for a patient with HCC and pulmonary metastases, surgical resection for lung metastases can be effective if the number of lung metastases is less than two.
This case report suggests that surgical resection can be an effective treatment for patients with both ruptured HCC and pulmonary recurrences. When intrahepatic recurrences are not present, a previous episode of HCC rupture is not a contraindication for pulmonary metastasectomy in patients with HCC.
Written informed consent was obtained from the patient for publication of this case report and any accompanying images. A copy of the written consent is available for review by the Editor-in-Chief of this journal.
- 18.Nakamura T, Kimura T, Umehara Y, Suzuki K, Okamoto K, Okumura T, Morizumi S, Kawabata T, Komiyama A: Long-term survival after report resection of pulmonary metastases from hepatocellular carcinoma: report of two cases. Surg Today. 2000, 35 (10): 890-892. 10.1007/s00595-005-3022-7.CrossRefGoogle Scholar
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