Oat cell carcinoma metastasis to the foot

Foot metastasis: Current knowledge

Foot metastasis are rare and often overlooked due to non-specifical symptoms. This often leads to misdiagnosis delaying the right diagnosis. Metastatic disease of the foot is rare. Foot pain and swelling may be the presenting symptom of an occult malignancy. If metastatic disease is not kept in the differential diagnosis of foot pain, diagnosis and treatment will be delayed. The purpose of this study was to analyze articles presenting cases of foot metastasis to provide a more accurate incidence of symptomatic foot acrometastasis as well as to review the clinical course and outcomes. Studies were searched on PubMed/Medline from the inception to February 2020. All studies included in the review presented foot metastasis either with or without a known primary tumor. Most of the articles were case reports, to which we added two case reports of foot acrometastasis produced by our Institute. Forty-three studies with a total of 45 patients were included in this review. The literature published mostly concerning case reports about old patients (average age: 63,2), in a late phase of their disease. Lung cancer appeared to be the most common primary tumor, followed by endometrial and breast cancer. In the 36% of the cases foot metastasis were found when the primary site was still unknown. Calcaneus and metatarsal bones were the most common bones involved. Surgical solution is rare, the chosen treatments are often of palliative care. Prognosis was often poor, death occurred within 2 years since the discovery of foot metastasis in about 50% of cases.

Metatarsal metastasis from clear cell renal cell carcinoma: a case report and literature review

Background

Bone metastasis is known to occur in some patients with cancer, usually in the spine, pelvis or ribs, and less than 0.01% of patients have metastases in the foot bone, so metatarsal metastasis is quite rare. The initial symptoms of osseous metastases are swelling, pain, or both.

Case presentation

We report a 68-year-old man with solitary metatarsal metastasis 26 months after a diagnosis of renal clear cell carcinoma. The patient suffered intermittent swelling of his right foot and pain for one year due to trauma and was not treated. The doctor attributed the symptoms to trauma, administering massage therapy and a plaster cast to the patient at the local clinic. After reviewing the medical records, we found that this patient had a history of clear cell renal cell carcinoma. The patient underwent radiological examination and open biopsy of the first metatarsal bone of the right foot. These findings confirmed that the patient had a metatarsal metastasis from clear cell renal cell carcinoma. The patient subsequently underwent right foot amputation. No local recurrence or distant metastasis was found after a 6-month follow-up.

Conclusion

Clinicians should be aware of a history of renal cell carcinoma (RCC) and fully understand the patient’s past medical history. When treating patients with clear cell renal cell carcinoma who have unresolving bony pain or swelling, clinicians should always keep in mind the possibility of bone metastasis of RCC.

Metastatic adenosquamous carcinoma of the foot: a case report

Metastasis of carcinoma to the bones of the foot is rare and carries with it a very poor prognosis for patients. Acrometastasis can be the initial manifestation of an occult cancer or widespread metastasis of a previously diagnosed cancer. A high level of suspicion and timely diagnosis are essential to the timely diagnosis and treatment of this condition. In this report, a case of metastatic non-small cell lung carcinoma to the first metatarsal, intially diagnosed as acute gout, is presented.

Metastatic skeletal disease of the foot: case reports and literature review

BACKGROUND

Metastatic disease of the skeleton occurs in at least 20% to 30% of patients with malignancy, but metastasis to the foot and hand (acrometastasis) is extremely rare (0.007% to 0.3%). Metastases to the feet are even rarer and have been reported in half to one-third the rate for hand metastases. Failure to recognize these lesions has led to delayed diagnosis and/or inappropriate treatment. The purpose of this report is to highlight the clinical and radiologic features that aid in the diagnosis and potential treatment of this condition along with a pertinent review of the literature.

MATERIALS AND METHODS

In a retrospective review of 694 patients with histologically proven metastatic skeletal disease (January 1988 to January 2007), 14 cases of metastatic lesions to the foot were identified.

RESULTS

The most frequent primary site was in the genito-urinary system in eight patients and the most common bones involved were the calcaneus and the talus in six patients each. All patients died after a mean survival of 14.8 (range, 1 to 54) months after diagnosis of metastases.

CONCLUSION

Although metastatic disease of the foot is rare, it should be considered in the diagnosis of a painful foot, especially if suspicious radiographic changes are present in an older patient. The common primary sites are the genito-urinary, lungs, breast, and the colo-rectum. Treatment is usually palliative to reduce pain and maintain function.