OBJECTIVETo report a case of rectal non-Hodgkin lymphoma with concomitant rectal adenocarcinoma.

METHODSClinical records of a 71 years old male patient with rectal non-Hodgkin lymphoma with concomitant rectal adenocarcinoma admitted on May 19, 2010 to the First Affiliated Hospital of Sun Yet-sen University were retrospectively reviewed. Clinical manifestations, diagnosis, and treatment as well as postoperative pathology were summarized.

RESULTSThe preoperative diagnosis of the patient was severe atypical adenomatous hyperplasia with focal carcinogenesis, and the preoperative staging was T2N0-1M0. The patient underwent a Parks procedure (rectal resection and colo-anal anastomosis) and subtotal resection of left lateral liver. The operation was successful, postoperative recovery uneventful. Postoperative pathology showed moderately differentiated tubular adenocarcinoma with deep muscular invasion, and non-Hodgkin lymphoma with marginal zone cell. Both the distal and proximal resection margins were negative and no vascular and neural invasion were seen. Immunohistochemical staining indicated L26(+), Bcl-2(+), Bcl-6(+), CD3(-), CD23(-), CK epithelial cells(+), and M-CEA luminal border(+). The pathological and immunohistochemistry results of liver specimens showed hepatic mucosa-associated marginal zone lymphoma.

CONCLUSIONSRectal adenocarcinoma and lymphoma occurring at the same site simultaneously is extremely rare with unique pathologic features.

Adenocarcinoma ; complications ; pathology ; Aged ; Humans ; Lymphoma, Non-Hodgkin ; complications ; pathology ; Male ; Rectal Neoplasms ; complications ; pathology

Patients with neurofibromatosis-1 (NF-1) have increased susceptibility to a variety of malignancies. Here, we document a rare case of two separated ileal adenocarcinomas in NF-1. The adenocarcinomas were surrounded by a diffuse tubular adenomatous lesion of the mucosa, and ganglion cells were scattered in the NF background. We found this case meaningful for several reasons: two separated adenocarcinomas arising in an unusual ileal segment, the association with precancerous tubular adenoma, and the presence of ganglion cells, which suggests ganglioneuromatosis in NF-1.
Adenocarcinoma/complications/*pathology ; Adult ; Humans ; Ileal Neoplasms/complications/*pathology ; Ileum/pathology ; Intestinal Mucosa/pathology ; Male ; Neurofibromatosis 1/complications/*pathology

Adenocarcinoma ; complications ; pathology ; Aged ; Humans ; Male ; Neoplasms, Multiple Primary ; complications ; pathology ; physiopathology

We reported localized amyloidosis involving seminal vesicles and vasa deferentia, which was found in two patients with prostatic adenocarcinoma. A 60-yr-old (Case 1) and a 59-yr-old (Case 2) man came to our hospital with elevation of serum prostate-specific antigen (PSA) and biopsy proven carcinoma, respectively. MRI revealed multiple irregular foci of low signal intensity in the prostates as well as in both seminal vesicles and vasa deferentia on T2-weighted imaging, suggesting prostatic carcinoma with extension to both seminal vesicles and vasa deferentia in both cases. Under the clinical diagnosis of stage III prostatic adenocarcinoma, a radical prostatectomy was performed in both patients. Microscopically, Gleason score 7 adenocarcinoma was observed in both patients. In addition, isolated amyloidosis of both seminal vesicles and vasa deferentia was found without carcinoma involvement. Localized amyloidosis in the seminal vesicles, which is considered as senile process, has been occasionally reported in the autopsy and in the surgical specimens. Amyloid deposition in the vas deferens has also been reported in the literature, however, the deposition mimicking extension of carcinoma has not been reported. In this report, two cases of isolated amyloidosis of the seminal vesicles and vasa deferentia are described with electron microscopic study and literature review.
Adenocarcinoma/complications ; Amyloidosis/complications/*pathology ; Human ; Male ; Middle Aged ; Prostatic Neoplasms/complications ; Seminal Vesicles/*pathology ; Vas Deferens/*pathology

Adenocarcinoma, Papillary ; complications ; Adult ; Ear Neoplasms ; complications ; Endolymphatic Sac ; pathology ; Facial Paralysis ; etiology ; Humans ; Male

We have reviewed 1066 thyroid lesions and compared the relative incidence of the so called 'palpation thyroiditis' between autoimmune thyroiditis and normal thyroid parenchyme surrounding the nodular thyroid lesion and also discussed the pathogenesis of palpation thyroiditis. The typical histopathologic features of 'palpation thyroiditis' were seen in 275 cases among 467 adenomatous goiters and in none of the autoimmune thyroiditis. We here in this paper suggest that the so called 'palpation thyroiditis' is not merely a secondary phenomenon to mechanical follicular damage by vigorous palpation, but this lesion more likely develops in conditions where certain types of physiologic alteration has occurred in follicular basement membrane, just like a pathogenesis of subacute granulomatous thyroiditis.
Adenocarcinoma/complications/pathology ; Adenoma/complications/pathology ; Carcinoma, Papillary/complications/pathology ; Diagnosis, Differential ; Goiter, Nodular/complications/pathology ; Humans ; *Iatrogenic Disease ; Palpation/*adverse effects ; Thyroid Gland/*injuries/pathology ; Thyroid Neoplasms/complications/*pathology ; Thyroiditis/diagnosis/etiology/*pathology ; Thyroiditis, Autoimmune/*pathology

Adenocarcinoma ; complications ; pathology ; surgery ; Aged ; Colectomy ; methods ; Colonic Neoplasms ; complications ; pathology ; Diagnosis, Differential ; Female ; Hepatectomy ; methods ; Humans ; Liver ; pathology ; surgery ; Liver Diseases ; complications ; pathology ; surgery ; Necrosis

A 60 year-old female complained with abdominal distension for one month. Stage IIIc, grade 2 clear cell carcinoma of the ovary was diagnosed after laparotomy. Weekly paclitaxel combined with carboplatin as adjuvant chemotherapy was given after optimal cytoreductive surgery. An acute cerebral infarction after first chemotherapy cycle was developed. The patient presented with dyspnoea after the third chemotherapy cycle and the symptom could be relieved at rest. Such symptom worsened and relieved alternatively for 3 days. A sudden dyspnoea occurred to the patient again when she got up one night, and died of respiratory and circulatory failure on the way to the hospital. Autopsy revealed ovarian clear cell carcinoma with metastasis to the whole pelvic and abdominal cavity and massive pulmonary arterial embolism (the length of embolus is 20 cm) with cerebral infarction. A conclusive remarks was made during the conference that patients who underwent operation and chemotherapy were at high risk for venous thrombosis (VT) and pulmonary embolism (PE). It was important to analyze a patient's individual risk for VT and PE. Appropriate thrombosis prophylaxis ought to be considered highly for high risk patients.
Adenocarcinoma, Clear Cell ; complications ; pathology ; Death, Sudden ; Female ; Humans ; Middle Aged ; Ovarian Neoplasms ; complications ; pathology ; Pulmonary Embolism ; etiology

OBJECTIVEthe aim of this study was to determine the clinicopathological characteristics of colorectal cancer (CRC) patients complicated with type 2 diabetes mellitus (T2DM ).

METHODSA total of 3, 202 patients with CRC confirmed pathologically in Tianjin Union Medicine Center from January 2005 to December 2009 were included in this study. We analyzed the differences in clinicopathological features between T2DM patients and non-diabetic patients according to age of diagnosis, gender, tumor site, stage, gross type, histological type, and differentiation.

RESULTSFrom 2005 to 2009, the number of CRC patients increased yearly. The high incidence age of all CRC patients was 51 to 80 years old. The male to female ratio was 1.18:1, showing that the number of female patients with CRC was increased significantly compared with males. The CRC distribution of T2DM patients and non-diabetic patients showed a predominance of rectal cancer (64.4%, 68.7%), followed by sigmoid colon cancer (12.5%, 13.0%), and moderately differentiated ulcer-type adenocarcinoma. Compared with non-diabetic patients, T2DM patients were older (66.2 years versus 62.7 years, P < 0.001) and had more multiple CRCs (3.5% versus 1.6%, P < 0.001). Moreover, the proportion of lymph node or organ metastasis in T2DM patients was higher than that in non-diabetic patients (52.6% versus 45.6%, P < 0.05). No significant differences were observed between both groups in terms of gender, gross type, histological type, and differentiation(P > 0.05 for all).

CONCLUSIONSCRC incidence shows an increasing trend with age. CRC patients with T2DM have an older age of onset, higher proportion of lymph node and distant organ metastasis than in non-diabetic patients.

Adenocarcinoma ; complications ; pathology ; Aged ; Colorectal Neoplasms ; complications ; pathology ; Diabetes Mellitus, Type 2 ; Female ; Humans ; Male ; Middle Aged

A heterotopic pancreas in the gastrointestinal tract is mostly found incidentally and its malignant transformation is extremely rare. We describe the second case of adenocarcinoma arising in a gastric heterotopic pancreas of an asymptomatic 35-yr-old man in Korea. Esophagogastroduodenoscopy revealed a submucosal tumor with an irregular central umbilication in the gastric antrum. A wedge resection specimen demonstrated a submucosal oligolocular cystic mass (1.7x1.4x1.2 cm) with a solid portion. Microscopically, the cystic portion was composed of dilated pancreaticobiliary type ducts with adjacent small foci of periductal glandular structures. The adenocarcinoma components in the solid area infiltrated the proper muscle and the overlying mucosa of the stomach. The transitional area between the benign ductal structures and the adenocarcinoma component was found. The follow-up course was uneventful 5 months postoperatively.
Adenocarcinoma/complications/*diagnosis/pathology ; Adenomyoma/pathology ; Adult ; Autopsy ; Choristoma ; Epithelium/pathology ; Gastric Mucosa/pathology ; Human ; Male ; Pancreas/*abnormalities ; Pancreatic Neoplasms/complications/*diagnosis/pathology ; Time Factors