Cáncer primario múltiple sincrónico: a propósito de un caso / Synchronous multiple primary cancer: report of a case

Los tumores malignos primarios múltiples sincrónicos son relativamente inusuales, aunque el número de pacientes diagnosticados con tumores primarios múltiples se está incrementando, dado al desarrollo de procedimientos diagnósticos más sofisticados, invasivos o no invasivos, y el incremento del número de pacientes ancianos. Los canceres sincrónicos al triple fueron reportados en solo el 1,2-1,9% de todos los canceres primarios. Los órganos digestivos son el sitio más común para tumores malignos primarios múltiples y también es el sitio usual del tumor primario. Nosotros describiremos los síntomas, diagnostico y tratamiento de un paciente masculino de 65 años con tumores gástricos malignos múltiples sincrónicos asociado a un cáncer de esófago.

Synchronous multiple primary malignant tumors are relatively unusual, although the number of patients diagnosed with multiple primary tumors is increasing due to development of more sophisticated invasive and non-invasive diagnostic tools and an increase in the number of elderly patients. Synchronous triple cancers were reported in only 1.2-1,9% of all primary cancers. Digestives organs are the most common tumor site for multiple primary malignant tumors and also the usual site for primary tumors. We will describe the symptoms, diagnosis and treatment of a 65 year-old male patient with synchronous gastric malignant tumors associated with esophageal cancer.

Microsatellite Instability Is Associated with the Clinicopathologic Features of Gastric Cancer in Sporadic Gastric Cancer Patients

PURPOSE: Replication error is an important mechanism in carcinogenesis. The microsatellite instability (MSI-H) of colorectal cancers is associated with the development of multiple cancers. The influence of MSI-H on the development of multiple gastric cancers in sporadic gastric cancer patients has not been defined. This study was performed to reveal the association between the clinicopathologic features and MSI in sporadic gastric cancers. MATERIALS AND METHODS: Between July 2004 and March 2009, the clinicopathologic characteristics, including MSI status, were evaluated in 128 consecutive patients with sporadic gastric cancers. None of the patients had hereditary non-polyposis colorectal cancer of familial gastric cancer. The markers that were recommended by the NCI to determine the MSI status for colorectal cancers were used. RESULTS: MSI-H cancers were found in 10.9% of the patients (14/128). Synchronous gastric cancers were shown in 4 patients (3.1%). Synchronous cancers were found in 2 of 14 patients with MSI-H gastric cancer (14.3%) and 2 of 114 patients with MSS gastric cancer (1.8%; P=0.059, Fisher's exact test). Among the patients with synchronous cancer 50% (2/4) had MSI-H cancer, but 9.7% of the patients (12/124) without synchronous cancer had MSI-H cancer. MSI-H (RR, 24.7; 95% CI, 1.5~398.9; P=0.024) was related with to synchronous gastric cancer, but age, gender, family history, histologic type, location, gross morphology, size, and stage were not related to synchronous gastric cancer. CONCLUSIONS: MSI is associated with the intestinal-type gastric cancer and the presence of multiple gastric cancers in patients with sporadic gastric cancer. Special attention to the presence of synchronous and the development of metachronous multiple cancer in patients with MSI-H gastric cancer is needed.

Clinicopathlogic characteristics of multiple synchronous early gastric cancers / 대한내과학회지

BACKGROUND: With the progress of limited surgery and endoscopic treatment for early gastric cancer (EGC), multiple synchronous EGCs, a cause of recurrence, become more important. The objective of this study was to elucidate the characteristics of multiple synchronous EGCs with an emphasis on features of preoperatively undiagnosed lesions. METHODS: We retrospectively reviewed medical records of 496 patients who underwent a gastrectomy for EGC at our institution between January 2004 and December 2004. RESULTS: Twenty-four patients (4.8%) had multiple synchronous EGCs with 24 main and 27 accessory lesions. Multiple synchronous EGCs showed male predominance (p=0.03). Other characteristics including lymph node metastasis were the same as with single EGC. Out of 27 accessory lesions, six lesions (22%) were not detected preoperatively in six patients (25%). Macroscopically five lesions were flat and one lesion was depressed. Five lesions were located at the anterior or posterior wall of the middle and low third portion and one lesion was located at the lesser curvature side of the upper third portion of the stomach. Two lesions were 4 mm, one lesion was 8 mm, two lesions were 12 mm and one lesion was 15 mm in size (mean diameter = 9.1 mm). Histologically, four lesions were of the differentiated type and two lesions were of the undifferentiated type. CONCLUSIONS: Multiple synchronous EGCs have same clinicopathologic features as a single EGC except for male predominance. Considering the possibility of a synchronous lesion, one should examine the entire stomach precisely with special attention to the anterior, posterior wall and lesser curvature side of the same or neighboring area of a known EGC lesion before treatment.

A Case of Synchronous Four Gastric Cancer / 대한소화기내시경학회지

The incidence of synchronous gastric cancer is variously reported to be 2.07%, 5.22%, 6.5%, 8.6%, or 9% and has been increasing recently, probably with advance in the diagnosis of gastric cancer. Our case in presentation is a 70-year-old male patient who had total gastrectomy and esopbagiojunostomy done for synchronous four gastric cancer. Each has different histologic types, Some of these lesions are not suspected before operation and are found almost by chance during histologic examinations after surgery performed only to remove main lesion. So we report this case with a review of literatures.