Pathological Complete Response to a Single Dose of Pembrolizumab-Based Chemoimmunotherapy for Squamous Cell Carcinoma of the Lung: A Case Report.

We herein describe a patient with non-small-cell lung cancer who achieved pCR with a single dose of pembrolizumab-based chemoimmunotherapy followed by surgery. A 61-year-old man was referred to our hospital with wheezing and an abnormal chest shadow. Squamous cell carcinoma of the left lower lobe, cT2aN1M0 stage IIB, was diagnosed and pembrolizumab-based chemoimmunotherapy was initiated at the patient's request.

Clinical features of and chemotherapy for cancer of the small intestine.

Background: Cancer of the small intestine is a rare disease, and its clinical features have not been clearly elucidated. Techniques such as double balloon endoscopy and capsule endoscopy allow the preoperative diagnosis of cancer of the small intestine, but this cancer is often detected at an advanced state and in many cases postoperative chemotherapy is required. This study evaluated the pre- and postoperative clinical course of cancer of the small intestine and the effectiveness of chemotherapy.

Infliximab treatment for anal fistula in patients with Crohn's disease.

Background: Infliximab has played a central role in the treatment of luminal Crohn's disease (CD) due to its great usefulness. Although the seton placement has been widely used for the treatment of anal fistula in patients with CD, we have used infliximab for severe cases in which improvement was not achievable by the seton placement, or for patients in whom improvement of quality of life (QOL) could be expected.

Patients And Methods: The anal region of 383 patients with CD was examined during the period from July 1985 to December 2005 and the presence of a lesion in the anal region was confirmed in 326 patients.

Study of colorectal cancer with Crohn's disease.

Background: Crohn's disease (CD) cases have been increasing and prolonged cases are now frequent. In addition, in Japan, more cases with concomitant malignant disease have also recently been reported. There is a particularly high risk of cancer occurring simultaneously in the lower rectum and the anal area.