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Plastic and Reconstructive Surgery - Global Open:
doi: 10.1097/GOX.0000000000000021
Case Reports

Metastasis of Hepatocellular and Renal Cell Carcinoma to the Hand

Rommer, Elizabeth MD*; Leilabadi, Solmaz Niknam MD, MHA*; Lam, Grace BA*; Soltani, Ali MD; Ellis, Chandra V. MD*; Rizvi, Murtaza MD*; Wong, Alex K. MD, FACS*

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From the *Division of Plastic and Reconstructive Surgery, Keck School of Medicine of USC, Los Angeles, Calif.; and VA Southern Nevada Healthcare System, and Department of Surgery, University of Nevada School of Medicine, North Las Vegas, Nev.

Received for publication September 4, 2013; accepted October 3, 2013.

Disclosure: The authors have no financial interest to declare in relation to the content of this article. The Article Processing Charge was paid for by the authors.

Alex K. Wong, MD, FACS Division of Plastic and Reconstructive Surgery Keck School of Medicine of USC 1510 San Pablo Street Suite 415, Los Angeles CA 90015 E-mail: alex.wong@med.usc.edu

This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License, where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially.

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Abstract

Summary: Malignant carcinoma metastasis to the skeleton is the third most common site of metastasis after lung and liver, usually involving the axial skeleton and the proximal ends of long bones, ribs, and vertebrae. Acrometastasis, metastasis to hands or feet, comprises only 0.1% of all metastases. Here, we present 2 cases of acrometastasis, one from hepatocellular carcinoma and the other from renal cell carcinoma. We describe the presentation, radiographs, surgical treatment, and outcomes for each patient. Patients presented with swelling and pain at the tumor sites and were treated with amputations. The second patient’s disease progressed resulting in death shortly after amputation indicating acrometastasis may be a poor prognostic indicator of survival. We review the literature and discuss the importance of disease process recognition and prognosis.

The skeleton is the third most common site for metastasis of malignant carcinoma after the lung and liver, most frequently involving the axial skeleton and the proximal ends of long bones, ribs, and vertebrae.1 Acrometastasis, metastasis to hands or feet, comprises only 0.1% of all metastases. The distal phalanx is most frequently involved, followed by metacarpals and remaining phalanges.2,3 Acrometastases typically arise from primary lung, kidney, and breast tumors in decreasing order of frequency.3 Here, we report 2 cases of hand acrometastasis, one from hepatocellular carcinoma (HCC) and the other from renal cell carcinoma (RCC). Acrometastasis, a poor prognostic indicator of survival, requires the plastic hand surgeon to understand prognosis and treatment to appropriately manage these patients.

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CASE 1

A 30-year-old man presented to the clinic for bleeding masses of the left ring and small fingers. His medical history consists of Hepatitis B and HCC with metastasis to the brain and phalanges of the left hand. He underwent 2 craniotomies, Gamma knife treatment for the brain metastasis, and chemotherapy and radiation to the left hand. Physical examination revealed blistering masses of the left ring and small fingers that bled and enlarged over several days and weeks, respectively, before presentation (Fig. 1). The hand was nonfunctional, diffusely tender, and exhibited muscular wasting. Radiographs demonstrated an aggressive lesion in the second metacarpal and a transverse lucent lesion with nondisplaced fracture in the fourth distal phalanx (Fig. 2). Surgical treatment consisted of palliative amputation to the middle phalanx of the ring and small fingers. With an uneventful recovery, the patient was discharged home on postoperative day 5 on chemotherapy. The wounds healed without complication (Fig. 1).

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Fig. 1
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Fig. 2
Fig. 2
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CASE 2

A 66-year-old right-hand-dominant African American woman presented to the clinic with masses of the right index and left middle fingers. Her medical history consisted of RCC without signs of systemic disease, treated with robotic nephrectomy and chemotherapy. Physical examination revealed swelling of the right index and left middle fingers (Fig. 3). She had full range of motion but tenderness to palpation at the tumor sites. Radiographs reveal an extensive osteolytic lesion in the distal phalanx of the left middle finger (Fig. 4). Surgical treatment consisted of palliative amputation to the distal phalanx of the right index finger and middle phalanx of the left middle finger (Fig. 3). Without complications from this procedure, the patient’s disease progressed resulting in death 4 months later.

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Fig. 3
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Fig. 4
Fig. 4
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DISCUSSION AND REVIEW OF LITERATURE

British surgeon Handley4 first described the rare phenomenon of acrometastasis to the hand in 1906 when reporting a case of a woman with breast carcinoma later developing multiple metacarpal metastases. In 2008, Flynn et al3 reviewed 257 cases demonstrating the distal phalanx as the most common site of metastasis, followed by the metacarpal, proximal phalanx, middle phalanx, and the carpals. Almost half of these cases stemmed from primary lung (44%), kidney (12%), breast (10%), and colon cancers (6%).3 Since then, 29 more cases have been reported including primary pulmonary, renal, and vaginal carcinomas5 and follicular carcinoma of the thyroid.6 Clinical presentation is a painful, warm, swollen, and/or erythematous lesion usually resulting in functional impairment. Advanced tumors can appear ulcerated and cause severe irritation. Radiologic appearance demonstrated by irregular osteolytic lesions lacking a periosteal reaction7 coupled with the presence of a history of malignancy should raise suspicion for acrometastasis, although the differential diagnosis includes gout, rheumatoid arthritis, whitlow, osteomyelitis, fistula, and osteoarthropathy.

Estimated that 10% of acrometastasis become symptomatic before a primary tumor is discovered,8 it was the initial presentation of occult tumors in 10 of the 29 (34%) reported cases since 2008. Patients were misdiagnosed with osteoarthritis or infection based on presentation.9,10 Radiographic osteolytic changes prompted a malignancy work-up after histological confirmation. However, Bhandari and Brown11 reported one case of persistent pain 3 months before radiographic changes increasing the need for high suspicion of acrometastasis in persistent pain refractory to nonsteroidal anti-inflammatory drugs or antibiotics.

Not limited to bone, acrometastasis to the skin and soft tissues without skeletal involvement can also occur. Aydin et al12 reported a laryngeal carcinoma metastasizing to skin overlying the palmar surface of the left fifth metacarpal joint, and Afshar et al13 reported a gestational choriocarcinoma metastasizing to the junction of the hyponychium and nail bed of the small finger of the dominant hand.

The mechanism of acrometastasis remains poorly understood. The phalangeal absence of bone marrow has led to alternative theories for hematologic spread14 including increased blood flow and trauma. The release of prostaglandins and local chemotactic factors can promote cell migration and adherence to bone.8 Observation that dominant hand metastasis occurs more commonly supports this theory as that hand receives more blood flow and is more prone to trauma than the nondominant hand.15

Given the advanced stage of disease upon presentation with a mean survival of 6 months, the goal of treatment is palliation.3 Although zoledronic acid and denosumab are often indicated to treat bone metastasis of primary solid tumors, their primary mechanism of action is the inhibition of osteoclasts from resorbing bone, limiting their use in acrometastasis where osteolysis has already occurred.16 Early detection, as in the case of Bhandari and Brown,11 may benefit from these medications to prevent progression.

Unfortunately, acrometastasis is usually detected late, making aggressive modalities such as curettage, wide excision, chemotherapy, radiation, and amputation necessary to achieve palliation.6 The lesion site also contributes to the treatment approach. Proximal and thumb lesions are best managed conservatively with radiation providing immediate pain relief while maintaining normal function.17,18 Distal lesions or lesions unresponsive to radiation require palliative amputation to provide comfort in the patient’s end of life.3 Acrometastasis represents a poor prognosis with a survival rate of approximately 1 year with therapy19; therefore, reconstruction is not typically considered unless the patient remains tumor free for 2 to 3 years.20

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CONCLUSION

Acrometastasis from a primary RCC or HCC is a rare condition carrying grave prognostic indicators. It is important for plastic hand surgeons treating patients to understand implications of discovering such a lesion; although curative resection is unlikely, palliative resection should be considered.

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REFERENCES

1. Mundy GR. Mechanisms of bone metastasis. Cancer. 1997;80(8 Suppl):1546–1556

2. Kerin R. The hand in metastatic disease. J Hand Surg Am. 1987;12:77–83

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4. Handley WS Cancer of the Breast and Its Operative Treatment. 1906 London Murray

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17. Carvalho Hde A, Tsai PW, Takagaki TY. Thumb metastasis from small cell lung cancer treated with radiation. Rev Hosp Clin Fac Med Sau Paulo. 2002;57:283–286

18. Kumar PP, Kovi J. Metastases to bones of the hands and feet. J Natl Med Assoc. 1978;70:837–840

19. Ahlmann ER, Greene NW, Menendez LR, et al. Unusual locations for metastatic malignancy of the hand: a report of three cases. J Surg Orthop Adv. 2008;17:267–270

20. Morris DM, House HC. The significance of metastasis to the bones and soft tissues of the hand. J Surg Oncol. 1985;28:146–150

© 2013 American Society of Plastic Surgeons