Colon adenocarcinoma with metastases to the scaphoid: a case report and review of the literature

Acrometastases to the Hand and Wrist: A Series of 9 Cases and Review of the Literature

Introduction Acrometastases are extremely rare in the hand, with a prevalence of around 0.1% according to the literature. They are normally associated with advanced tumor stages, especially in lung cancer. The present article shows the experience of our center in the management and treatment of these pathologies.

Materials and Methods We report a series of 9 cases treated between 1992 and 2020 in the hand and wrist. Data regarding the primary tumor, the target organ, and survival are analyzed. A review of the cases of acrometastasis reported in the literature is also carried out, emphasizing in how many of then the acral lesion was the first sign of an unknown tumor.

Results Acrometastases predominantly affect male patients aged around 60 years, and the primary tumor that is the cause in most cases is lung cancer, with a very low survival rate after the diagnosis (of approximately 8 months).

Discussion and Conclusions In cases of acral lesion of non-traumatic origin, acrometastases should be considered, especially in patients who have a known primary tumor. In the present series, there were three cases in which the acrometastases were the first sign of a tumor in the patient, and in one of them it was initially treated as whitlow. In the literature, in approximately 50% of the cases, acrometastases are the first sign of the presence of a tumor.

Once diagnosed, multidisciplinary medicosurgical treatment is essential to improve the patient's function and pain as much as possible.

Acrometastases to the Hand: A Systematic Review

Background and Objectives: The term acrometastases (AM) refers to secondary lesions sited distally to the elbow and knee, representing 0.1% of all bony metastases. By frequency, pulmonary cancer and gastrointestinal and genitourinary tract neoplasms are the most responsible for the reported AM. Improvements in oncologic patient care favor an increase in the incidence of such rare cases. We performed a systematic review of acrometastases to the hand to provide further insight into the management of these fragile patients. We also present a peculiar case of simultaneous acrometastasis to the ring finger and pathological vertebral fracture. Material and Methods: A literature search according to the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) statement was conducted using the PubMed, Google Scholar, and Scopus databases in December 2020 on metastasis to the hand and wrist, from 1986 to 2020. MeSH terms included acrometastasis, carpal metastasis, hand metastasis, finger metastasis, phalangeal metastasis, and wrist metastasis. Results: In total, 215 studies reporting the follow-up of 247 patients were analyzed, with a median age of 62 years (range 10–91 years). Overall, 162 out of 247 patients were males (65.6%) and 85 were females (34.4%). The median reported follow-up was 5 months (range 0.5–39). The median time from primary tumor diagnosis to acrometastasis was 24 months (range 0.7–156). Acrometastases were located at the finger/phalanx (68.4%), carpal (14.2%), metacarpal (14.2%), or other sites (3.2%). The primary tumors were pulmonary in 91 patients (36.8%). The average interval from primary tumor diagnosis to acrometastasis varied according to the primary tumor type from 2 months (in patients with mesenchymal tumors) to 64.0 months (in patients with breast cancer). Conclusions: Acrometastases usually develop in the late stage of oncologic disease and are associated with short life expectancy. Their occurrence can no longer be considered rare; physicians should thus be updated on their surgical management and their impact on prognosis and survival.