RESUMEN

Tailgut cysts (TGCs) are rare congenital lesions derived from the remnants of primitive hindgut and are usually lined by squamous, transitional, or glandular epithelium. Malignant transformation in TGC may occur which is still rarer. Most common malignancies that arise from these cysts are adenocarcinomas. Preoperative diagnosis is difficult as high degree of suspicion is required for the diagnosis. We report here a case of adenocarcinoma arising in a tale gut cyst diagnosed preoperatively and till date very few cases have been reported in literature.

Asunto(s)

Adenocarcinoma/diagnóstico , Quistes/diagnóstico , Neoplasias de Células Germinales y Embrionarias/diagnóstico , Adenocarcinoma/patología , Adenocarcinoma/cirugía , Adulto , Quistes/patología , Quistes/cirugía , Diagnóstico Diferencial , Humanos , Imagen por Resonancia Magnética , Masculino , Neoplasias de Células Germinales y Embrionarias/patología , Neoplasias de Células Germinales y Embrionarias/cirugía , Región Sacrococcígea/diagnóstico por imagen , Región Sacrococcígea/patología , Región Sacrococcígea/cirugía , Resultado del Tratamiento

RESUMEN

Brown tumor (BT) is caused by altered metabolism of calcium resulting from hyperparathyroidism (primary or secondary). The most common cause of hyperparathyroidism is isolated parathyroid adenoma (PA), and the most common symptoms are hypercalcemia related. BT is considered as a late manifestation of PA and usually diagnosed after surgical treatment of the bony lesion. Fine-needle aspiration cytology (FNAC) is a cheap, easy, and less traumatic procedure and should be performed in all lesions wherever possible as unnecessary surgeries may be avoided. We here report a rare case of PA presenting primarily as BT and diagnosed on FNAC.

RESUMEN

Leiomyosarcomas (LMS) arising from vascular channel are rare and more often arise from inferior vena cava and pulmonary arteries. Primary renal vein LMS are even rarer and occur predominantly in females with peak in fifth and sixth decade. Preoperative diagnosis is difficult because these are rare tumours and present with symptoms and radiological findings similar to Renal Cell Carcinoma (RCC). We report a case of 55-year-old female who presented with abdominal discomfort with radiology showing a renal mass with features of RCC, radical nephrectomy was done and resected tumour showed an attachment to the wall of renal vein with morphology resembling LMS.