No abstract available.

Here we report a case of Strongyloides stercoralis infection of the gastric and pancolonic mucosa in a 79-year-old female with a monoclonal gammopathy of undetermined significance. Endoscopic biopsies were performed in gastric antrum, cecum, distal ascending colon, and hepatic flexure of the colon. On microscopic examination, there were many adult worms, larvae and eggs in the gastric and colonic mucosa. Worms, larvae, and eggs were located in the crypts and within the lumen of the crypts. The body wall of the adult worm was composed of cuticle and a weak muscle layer. A routine stool examination failed to detect larvae or ova. Based on the histopathologic examination, these parasites were confirmed as S. stercoralis.
Adult ; Aged ; Biopsy ; Cecum ; Colon ; Colon, Ascending ; Eggs ; Female ; Humans ; Larva ; Monoclonal Gammopathy of Undetermined Significance ; Mucous Membrane ; Muscles ; Ovum ; Paraproteinemias ; Parasites ; Pyloric Antrum ; Stomach ; Strongyloides stercoralis ; Strongyloidiasis

Here we report a case of Strongyloides stercoralis infection of the gastric and pancolonic mucosa in a 79-year-old female with a monoclonal gammopathy of undetermined significance. Endoscopic biopsies were performed in gastric antrum, cecum, distal ascending colon, and hepatic flexure of the colon. On microscopic examination, there were many adult worms, larvae and eggs in the gastric and colonic mucosa. Worms, larvae, and eggs were located in the crypts and within the lumen of the crypts. The body wall of the adult worm was composed of cuticle and a weak muscle layer. A routine stool examination failed to detect larvae or ova. Based on the histopathologic examination, these parasites were confirmed as S. stercoralis.
Adult ; Aged ; Biopsy ; Cecum ; Colon ; Colon, Ascending ; Eggs ; Female ; Humans ; Larva ; Monoclonal Gammopathy of Undetermined Significance ; Mucous Membrane ; Muscles ; Ovum ; Paraproteinemias ; Parasites ; Pyloric Antrum ; Stomach ; Strongyloides stercoralis ; Strongyloidiasis

Ancient schwannoma is a rare variant of schwannoma and a slow growing benign tumor associated with degeneration that may be diagnosed as a malignant tumor, because it presents with a large size and an inhomogeneous signal intensity. The main differential diagnosis of plexiform soft tissue tumor includes plexiform neurofibroma, malignant peripheral nerve sheath tumor (MPNST). In this case, we describe the MRI findings in a case of ancient schwannoma involving left thigh of a 63-year-old woman mimicking a plexiform MPNST. The tumor appeared as an inhomogeneous signal intensity and multinodular appearance, causing misdiagnosis as a plexiform MPNST.
Diagnosis, Differential ; Diagnostic Errors ; Female ; Humans ; Middle Aged ; Nerve Sheath Neoplasms ; Neurilemmoma ; Neurofibroma, Plexiform ; Peripheral Nerves ; Thigh

Schwannomas arise from the neural crest-derived Schwann cells. Their most common locations are the extremities, neck, mediastinum, retroperitoneum, and cerebellopontine angle. They have rarely been reported to occur in the breast. We herein report on a case of schwannoma of the breast in a 30-year-old woman. The ultrasonographic examination showed a well defined ovoid hypoechoic mass in the upper outer quadrant of her left breast. A presumptive diagnosis of fibroadenoma was made, and the mass was then removed. The histopathologic and immunohistochemical features confirmed the diagnosis of schwannoma of the breast.
Adult ; Breast* ; Cerebellopontine Angle ; Diagnosis ; Extremities ; Female ; Fibroadenoma ; Humans ; Mediastinum ; Neck ; Neurilemmoma* ; Schwann Cells

Biliary papillomatosis is a rare disease entity characterized by multiple papillary adenomas along the bile duct mucosa. It is widely accepted that the adenoma-carcinoma sequence represents the process by which most, if not all, cholangiocarcinomas of an intraductal-growing type arise. Interestingly, friable papillary projections easily detached from the primary site can be implanted into the other sites in the bile duct in suitable animal models, resulting in multiple tumors. A 76-year-old male was referred to our hospital due to intermittent abdominal discomfort. Imaging workups revealed two lesions: wall thickening in the proximal portion of the left interhepatic duct and abrupt narrowing of the distal common bile duct. A hepatopancreaticoduodenectomy was carried out and pathological analysis demonstrated a well-differentiated adenocarcinoma of the left hepatic duct and carcinoma in situ of the distal common bile duct on a background of biliary papillomatosis. Six days after the operation, the patient received a re-exploration due to ruptured mesenteric vessels. Unfortunately, 3 months after the initial operation, the patient died of aspiration pneumonia. Biliary papillomatosis can present with a broad spectrum of disease characteristics ranging from adenoma to, usually, low-grade adenocarcinoma. If there is a complete excision, and a favorable postoperative course is secured, excellent survival can be expected after surgery.
Adenocarcinoma ; Adenoma ; Aged ; Bile Ducts ; Carcinoma in Situ ; Cholangiocarcinoma ; Common Bile Duct ; Hepatic Duct, Common ; Humans ; Male ; Models, Animal ; Mucous Membrane ; Papilloma ; Pneumonia, Aspiration ; Rare Diseases

Malignant deciduoid mesothelioma is a rare malignant neoplasm occurring in the peritoneum of young women. We report a case of malignant deciduoid mesothelioma that occurred in the omentum of a 47-year-old woman. The patient had never exposed to asbestos and had no history of cesarean section. The lesions were multiple infiltrative nodules affected the peritoneal cavity, omentum, and surface of the uterus with both ovaries. Microscopically, the nodules were composed of mesothelial cells similar to decidual cells
Asbestos ; Cesarean Section ; Female ; Humans ; Mesothelioma* ; Middle Aged ; Omentum ; Ovary ; Peritoneal Cavity ; Peritoneum ; Pregnancy ; Uterus

Enteric duplication cysts are uncommon congenital anomalies whose embryogenesis remains unknown. We report here on an isolated enteric duplication cyst, that presents as an inguinal hernia. A 21-year-old woman was admitted with a month-long history of a palpable mass in the left groin. Radiologically, a computed tomography scan revealed a 3.5 x 2.5 cm sized cystic mass in subcutaneous layers of the left suprapubic area. Microscopically, the cystic wall resembled gut wall. The wall was composed of two distinct muscle layers with the presence of Auerbach's plexus. On examining the entire sections of the cyst wall very carefully, no epithelial lining was found on the inner surface. The submucosa was slightly fibrotic. The diagnosis was a completely isolated enteric duplication cyst.
Embryonic Development ; Female ; Groin ; Hernia, Inguinal ; Humans ; Muscles ; Myenteric Plexus ; Pregnancy ; Young Adult

Myolipoma is a rare benign tumor, composed of irregularly admixed adipose tissue and smooth muscle fibers. Few literature studies have described the radiologic appearance of myolipoma, especially in the soft tissue. No MRI findings in subcutaneous myolipoma of an extremity have been reported. Here, we report on the case of a 34-year-old woman with myolipoma in the subcutaneous tissue of the ankle and describe MRI features of the lesion.
Adult ; *Ankle ; Female ; Humans ; Lipoma/*diagnosis/pathology ; *Magnetic Resonance Imaging ; Muscle, Smooth/pathology ; Soft Tissue Neoplasms/*diagnosis/pathology ; Subcutaneous Fat/pathology

Amyloidosis is a disease characterized by deposition of extracellular fibrillar proteins in various tissues mainly derived from the mesoderm. We experienced a case of a 59-year old man with a localized bilateral mass at the angle of the mouth, which was surgically removed. It surrounded the facial arteries bilaterally with the same pattern, and was diagnosed as amyloidosis pathologically. Followed by further workup, he was finally diagnosed with the multiple myeloma. Cases such as this where an amyloidosis mass surrounded the main branches of the facial arteries has not yet been reported in the literature. We present a case of localized amyloidosis at the oral commisure surrounding the facial arteries with the review of its clinical patterns, diagnostic tools, pathologic findings and treatment.
Amyloidosis ; Arteries ; Mesoderm ; Mouth ; Multiple Myeloma ; Proteins