A Case of Squamous Cell Carcinoma of the Breast in a Patient with Crohn's Disease Taking Azathioprine / 대한소화기학회지

Azathioprine (AZA) treatment in transplant or autoimmune patients and subsequent appearance squamous cell carcinomas at various sites, particularly skin and cervix, has shown a close relationship. However, it remains uncertain whether this is true for the patients with Crohn's disease. We report a case of squamous cell carcinoma of the breast occurred in a 35-year-old female with Crohn's disease taking AZA. She was first diagnosed with Crohn's disease 10 years ago and has taken AZA with 5-aminosalicylic acid (5-ASA) on regular follow up in gastrointestinal department for 9 years. She had no family history of breast cancer. She visited breast cancer clinic due to incidentally found right breast mass. A mastectomy on the right breast was performed and 6.3x5.5 cm mass was removed. The mass was microscopically proven to be poorly differentiated squamous cell carcinoma with focal keratin pearl formation. At age of 25, she was first diagnosed with active Crohn's disease. 5-ASA and corticosteroid induced remission. Then, steroid was tapered off and AZA was maintained at 1 mg/kg due to leukopenia at higher dose. She stopped taking AZA at her discretion during her two pregnancies and reported total of 67 months of AZA medication on her breast cancer diagnosis.

Clinical Evaluation of Toxocariasis Presenting as a Liver Abscess / 대한내과학회지

BACKGROUND/AIMS: Toxocariasis rarely causes a liver abscess. We assessed clinical and laboratory manifestations as well as therapeutic responses in patients with toxocariasis presenting as a liver abscess. METHODS: Fourteen patients with toxocariasis presenting as a liver abscess were analyzed retrospectively. Symptoms, occupational history, dietary habits, contact with pets, allergic disease, peripheral eosinophil count, serum immunoglobulin E (IgE) level, and invasion to other organs were evaluated. After treatment with albendazole, follow-up was conducted with abdominal computed tomography (CT) and the measurement of serum eosinophil and IgE levels. RESULTS: Among 568 patients with a liver abscess, 14 were diagnosed with active toxocariasis. The mean age of the patients was 48 years, and nine (64%) were men. Four (28.6%) patients had pain in the right upper quadrant of the abdomen or epigastric area, one had cough, and the others (64.3%) had no symptom. Pulmonary involvement was noted in five patients and colon involvement in one. Six (42.9%) patients had a recent history of eating raw meat. Initial laboratory findings showed increased eosinophil and IgE levels in all patients. The initial CT showed one or multiple ill-defined, hypodense lesions in the liver. After 1 month of albendazole treatment, eosinophil counts were normalized or had decreased in 13 (93%) patients. On follow-up CT, liver abscesses disappeared within 6 months after therapy in 92% of patients. CONCLUSIONS: Symptoms, laboratory findings, and treatment of a liver abscess caused by toxocariasis differ from those of a pyogenic liver abscess. Early serologic testing may increase diagnostic yield and efficacy of treatment in patients with a liver abscess and peripheral eosinophilia.

Esophageal Perforation after Change of a Percutaneous Endoscopic Gastrostomy Tube / 대한소화기내시경학회지

Percutaneous endoscopic gastrostomy (PEG) has become a widely used and safe method for long-term enteral feeding in patients who are unable to tolerate oral feeding. Although a number of complications can occur following PEG placement, most of these complications are not life threatening. Serious complications occur rarely after this procedure and they include peritonitis, visceral perforation, major gastrointestinal bleeding, and necrotizing fasciitis. An esophageal perforation following PEG placement is very rare and predisposing factors include Zenker's or epiphrenic esophageal diverticuli, esophageal strictures, and mass lesions. We recently experienced a case of distal esophageal perforation following a PEG tube change. The predisposing esophageal perforation factor in this case was uncertain, and we successfully treated the patient with surgical intervention.

A Case of Relapsing Polychondritis Associated with Myelodysplastic Syndrome with Erythroid Hypoplasia/Aplasia

Relapsing polychondritis (RP) is a rare multisystem disorder. Myelodysplastic syndrome (MDS) with erythroid hypoplasia/aplasia is a rare form of myelodysplasia. Several cases of RP associated with MDS have recently been described. However, RP associated with MDS with erythroid hypoplasia/aplasia has never been reported. There was only one case report of polymyalgia rheumatica associated with MDS with erythroid hypoplasia/aplasia. In this study, we report a 79-year-old patient with RP, who developed MDS subtype refractory anemia (RA) with erythroid hypoplasia/aplasia, a very characteristic subtype of MDS.

A Case of Rapidly Progressive Glomerulonephitis Associated with Anti-Glomerular Basement Membrane Antibody and p-Antineutrophilic Cytoplasmic Antibody / 대한신장학회잡지

Rapidly progressive glomerulonephritis(RPGN) is clinical syndrome characterized by rapid loss of renal function within several weeks to months, with histologic finding of extensive crescent formation. We report a case of RPGN associated with anti-glomerular basement membrane antibody(anti-GBM Ab) and perinuclear-antineutrophilic cytoplasmic antibody(p- ANCA), which rapidly progressed to chronic renal failure. A 44-year-old male was referred to our hospital for evaluation of pitting edema and proteinuria. Both anti-GBM Ab and p-ANCA were detected in serum. Percutaneous renal biopsy showed many crescents with some fibrinoid materials and heavy deposits of IgG. He was treated with pulse methylprednisolone, followed by oral corticosteroid and cyclophosphamide. In spite of immunosuppressive therapy, his renal function deteriorated rapidly and uremic symptoms including pulmonary edema were aggravated. He was started on hemodialysis and he has received regular hemodialysis without recovery of renal function. Further studies will be needed to determine the clinical significance of combined anti- GBM Ab and ANCA.

A Case of Crescentric Glomerulonephritis Superimposed on Preexisting Membranous Nephropathy / 대한신장학회잡지

Membranous nephropathy (MGN) is a common cause for nephrotic syndrome in adults. Renal failure usually develops gradually in patients with MGN and rapid deterioration of renal function is a rare complication. Moreover, the development of crescentric glomerulonephritis (CGN) as a cause of acute renal failure (ARF) in patients with preexisting MGN is very rare. We report 20-year-old male patient with MGN who presented with ARF due to superimposed CGN. He had been diagnosed as idiopathic MGN and his renal function was maintained within normal range. After 13 months of conservative treatment, ARF was developed and renal biopsy was performed to differentiate the possible causes of ARF. Renal biopsy revealed diffuse crescents formation on preexisting MGN. Anti-GBM antibody and ANCA were not detected. This patient was treated with combination therapy including methylprednisolone pulse therapy followed by high dose steroid and cyclophosphamide. His renal function was improved significantly 2 weeks after treatment. In conclusion, when unexplained ARF in patient with MGN develops, prompt investigation for superimposed conditions including CGN is necessary and repeat renal biopsy should be considered.

A Case of Amiodarone-Induced Pulmonary Toxicity After a Long Course of a Low Dose Therapy / 결핵

Amidarone is one of the most commonly prescribed anti-arrythmic agents for almost all arrythmias, whether atrial or ventricular in origin. There are several side effects associated with amiodarone therapy. These include corneal deposits, abnormal liver function tests, hyper and hypothyroidism, bluish discolorations of the skin, bone marrow suppression, coagulopathies, peripheral neuropathies, and pulmonary toxicity. Amiodarone-induced pulmonary toxicity(APT), which was first described in 1980, is potentially serious side effects that are believed to develop in 5% of patients. Doctors often assume that APT occurs only when high amiodarone doses are used for a long time, but in practice a low maintenance dose of amiodarone may also be toxic. In this report, a case of amiodarone-induced pulmonary toxicity after a long course of a low dose therapy for refractory supraventricular arrythmia is described.