RESUMEN

Prostate cancer (PC) is the second most common malignancy in men. According to International agency for research on cancer,4552 new cases of PC were registered in 2018 in Pakistan.Although majority of cases are confined to prostate on initial presentation, there is a high tendency for advanced PC to metastasize to bone. Metastatic lesions are typically osteoblastic rather than osteolytic. Therefore, these are easily identified by Technetium labeled Methylene Diphosphonate (Tc99m-MDP) uptake on Whole body Bone Scan (BS). Hybrid scanning offers anatomic details for differentiation between aggressive or non-aggressive lesions. Most common axial sites include pelvic bones and spine. Metastases to appendicular skeleton is rare and uncommon . We present a case of 62-years-old male with PC. Follow-up WBS, showed interval development of multiple sites of skeletal metastases. SPECT-CT scan acquired for characterization of atypical site of abnormal MDP uptake in appendicular skeleton, which showed features suggesting skeletal metastasis.

Asunto(s)

Adenocarcinoma/diagnóstico por imagen , Neoplasias Óseas/diagnóstico por imagen , Peroné/diagnóstico por imagen , Neoplasias de la Próstata/patología , Adenocarcinoma/secundario , Neoplasias Óseas/secundario , Humanos , Ilion/diagnóstico por imagen , Masculino , Persona de Mediana Edad , Cintigrafía , Radiofármacos , Tomografía Computarizada por Tomografía Computarizada de Emisión de Fotón Único , Neoplasias Craneales/diagnóstico por imagen , Neoplasias Craneales/secundario , Neoplasias de la Columna Vertebral/diagnóstico por imagen , Neoplasias de la Columna Vertebral/secundario , Medronato de Tecnecio Tc 99m

RESUMEN

Solitary bone metastasis to fibula in patients of lung carcinoma is a rare entity, with only four cases reported in literature. We, hereby, present a case of a 50 year-old-male who was given three cycles of chemotherapy for lung carcinoma with no distant metastasis but presented 2 months later with a fusiform, painful swelling around the knee that was clinically suspected to be inflammatory in nature but proved to be fibular metastasis on cytology. There was no evidence of skeletal metastasis on initial bone scan. He was given palliative radiotherapy for this with symptomatic relief.