Malignant pulmonary lymphoproliferative angiitis. A monoclonal neoplasm

A Malignant Neoplasm Imitating a Subcutaneous Cyst

Figure 1. The tumor in the right popliteal fossa (naked eye appearance and MRI). DESCRIPTION A 36-year-old woman presented with a cystic lesion located on the right popliteal fossa, which grew slowly for 7 years and became remarkably larger in the last few months. The lesion was dark red in color (Fig 1) and elastic hard in consistency. When punctured by her primary care physician, darkish bloo...

Testicular hemangioma mimicking a malignant neoplasm

A 34-year-old man who presented with right scrotal pain, and who on subsequent ultrasound examination, was found to have an intratesticular hypoechoic mass. Based on the ultrasound appearance of this mass, a malignant germ cell tumor was thought to be the most likely diagnosis. Preoperative serum tumor markers, including lactate dehydrogenase, alpha-1-fetoprotein, and beta-human chorionic gonad...

Abdominal actinomycosis mimicking a malignant neoplasm.

Malignant neoplasm in kidney transplantation.

BACKGROUND The kidney recipient is at a higher risk for cancer than is the general population, although the incidence of neoplasms in general is considered lower in Japan than in Western countries. The cause of this increased risk associated with either transplantation or geography has not yet been established. METHOD The incidences and sites of malignant neoplasms were analyzed in 285 kidney...

Postrenal Transplant Metastatic Colonic Neoplasm: Posttransplant Lymphoproliferative Disorder or Adenocarcinoma?

Transplant recipients are vulnerable to a horde of infections and neoplastic conditions due to immunosuppression. Posttransplant lymphoproliferative disorder (PTLD) is a condition unique to the transplant recipient occurring due to monoclonal lymphocytic proliferation. It may affect any organ system with reportedly highest incidence in the gastrointestinal tract. The incidence of adenocarcinoma...