Cystic mesenteric lymphatic malformations are uncommon abdominal masses, which can cause abdominal signs and symptoms for a wide variety of reasons. Symptoms owing to volvulus are uncommon and have not been illustrated previously in the radiology literature. We present two cases to illustrate volvulus as a complication of mesenteric lymphatic ...

BACKGROUND: Ovarian neoplasms, other than sex cord--stromal tumors, are rare causes of hyperandrogenism. Only two cases of primary mucinous carcinomas associated with virilization have been reported. CASE: A 50-year-old female was referred to our clinic with a large pelvic mass. On examination she had significant facial hirsutism, clitoromegaly, and male ...

During a routine physical exam, an 18-day-old male infant was noted to have persistent abdominal distention and prominent vascular markings over his abdominal wall. Laboratory studies were significant for an elevated alpha-fetoprotein level of 7051 ng/ml and mild anemia. Abdominal ultrasound and CT scan demonstrated a large, heterogeneous mass in ...

Schwannomas are benign, encapsulated nerve sheath cell neoplasms. Cervical sympathetic chain (CSC) schwannomas are rare, with less than 50 cited cases in the literature. CSC schwannomas may mimic a number of parapharyngeal masses. We report a rare variant, "ancient" schwannoma, which presented cytologically and radiologically as a thyroid mass. This ...

A 36-year-old woman presented with a 10 mm diameter mass in the right breast. Since the mass persisted for 3 months after detection and mammary carcinoma was suspected based on ultrasonographic findings, the mass was resected. Histologically, the mass demonstrated proliferative margins and consisted of spindle cells with bland cytologic ...

Primary urethral tuberculosis associated with a caruncle is an extremely rare entity and ours is the second such case to be reported. A middle-aged woman presented with symptoms of frequency dysuria syndrome for the last 2 years. Local examination and cystoscopy revealed localized parurethral induration, tenderness and a urethral caruncle ...

We report herein the case of a Belgian 76-year-old woman who developed a hepatic tumour suspected to be a breast cancer metastasis. Radiological imaging and guided biopsies were not contributive. The patient underwent an explorative laparoscopy with frozen sections that did not provide further diagnosis, and an open left bisegmentectomy ...

Massive ovarian edema is an unusual cause of ovarian enlargement in young patients. Venous end lymphatic obstruction producing edema is thought to be the reason for enlargement of the ovaries in most cases. We report the case of a 23-year-old woman with unilateral massive ovarian edema, findings on ultrasound imaging, ...

A case of a periappendiceal actinomycosis, seen in an 83-year-old woman, clinically mimicking a right ovarian neoplasm penetrating the right colon, is presented. The patient's complaints led to the discovery of a right abdominal mass. Explorative laparotomy and right hemicolectomy were done. Histological examination revealed periappendiceal actinomycotic abscesses. We discuss ...

We report a case of a 66-year-old female who presented exertional dyspnea and palpitation. Echocardiography, transesophageal echocardiography and computed tomography showed a right atrial cystic mass attached to the interatrial septum. The patient underwent successful excision of the mass. The histopathological findings confirmed the lesion as a cystic tumor of ...

Two cases of idiopathic tumoral calcinosis presenting as an extradural mass are reported. There are few reports in the literature of this pathological process presenting as extradural masses, so both cases represent very unusual locations for tumoral calcinosis. Magnetic resonance imaging features and pathological correlation of these two cases are ...

BACKGROUND: Acquired neoplasms arising from the nonpigmented ciliary epithelium (NPCE) are much less common than uveal melanocytic proliferations. We report two cases of acquired neoplasms arising from the NPCE with immunohistochemical findings. METHODS: Case reports. RESULTS AND CONCLUSIONS: Patient 1 was a 39-year-old man who presented with a pigmented mass ...

Six cases of mycotic infectation of the brain are presented. All the patients were in the age group ranging from 18 years to 38 years. the duration of clinical symptoms varied from 6 days to 7 months. Computerized tomographic visualization of brain revealed a mass lesion in all. Operative findings ...

Aggressive angiomyxoma (AAM) is a rare, locally infiltrative tumor that occurs almost exclusively in the pelvic and perineal regions of women of childbearing age. We report the unusual case of a 26-year-old man with an AAM presenting as a slowly enlarging scrotal mass. Gray-scale scrotal sonography demonstrated a well-demarcated, hypoechoic, ...

A 64-year old woman presented with an asymptomatic occlusion of the intermediate bronchus associated with a peripheral mass occupying the entire middle and lower lobes. As malignancy was suspected, inferior bilobectomy was done. There was a complete atelectasis of both lobes, with massive parenchymal necrosis. Pathological examinations suggested a tuberculous ...

Para-articular chondroma is a rare tumor that has been reported in only 30 cases adjacent to large joints in the Anglo-Saxon literature. We report three new cases of this entity, describe its clinical, radiological and pathological features, and review the previous literature. Para-articular chondromas have an insidious clinical presentation and ...

This case report describes a 14-year-old female referred to Pediatric Dentistry for evaluation and treatment of cyclosporine-induced gingival hyperplasia. Examination of the anterior maxillary area showed a red, vascular, exophytic, soft-tissue mass which had been excised a few months earlier without a histopathologic examination being done. The mass did not ...

We report the ultrasonographic findings of a 60 year old woman with pseudotumorous form of ascariasis. Real-time ultrasonographic examination using a curved array transducer revealed grossly thickened small bowel loops, multiple small circular deposits throughout the peritoneal cavity, and a moderate amount of ascites. The English literature on the different ...

A 36-year-old woman had suffered from epigastric fullness for half a year. A splenic mass was found by ultrasonography. She was treated with splenectomy. Inflammatory pseudotumor of the spleen was diagnosed pathologically. This benign tumor in the spleen is extremely rare. To our knowledge, only 67 cases had been reported ...

In 1983, Thiemens and Heidenreich reported the first chemically produced mass-independent isotope effect. This work has been shown to have a wide range of applications, including atmospheric chemistry, solar system evolution, and chemical physics. This work has recently been reviewed (Weston, R. E. Chem. Rev. 1999, 99, 2115-2136; Thiemens, M. ...

We report a case of left thoracic kidney that was identified after a detailed workup for a left thoracic mass that appeared on a routine chest roentgenogram of a young adult. Intravenous pyelography and angiography clearly identified this rare anomaly. Anatomical features and clinical implications of this condition are presented.

Aprosencephaly/atelencephaly is an extremely rare central nervous system defect of the human fetus, which has been attributed to an encephaloclastic process. We report here the histopathological features of the rudimentary forebrain and retina of a case of aprosencephaly in a male fetus that was examined at 20 weeks of gestation, ...

A case of unilateral, subscapular elastofibroma dorsi secondary to degenerative osteoarthritis in the ipsilateral glenohumeral joint is presented. A 69-year-old woman had experienced symptoms of osteoarthritis in the right shoulder since contracting septic arthritis when she was 7 years old. The patient noticed a soft tissue mass in the right ...

Metastatic calcification is a pathologic condition characterized by deposition of calcified product in otherwise normal tissues as a result of hyperphosphatemia with or without concurrent hypercalcemia. Metastatic calcification presenting clinically as an oral lesion is extremely rare. To date, only 7 cases of metastatic calcification involving the oral soft tissues ...

Angiokeratoma is described by various authors as a rare variant of the hemangioma in the dog, characterized by a vascular component, like all types of vascular neoplasms, but also by an epithelial component. A case of angiokeratoma is described in a male 8-year-old dog. The tumor was located in heavily ...

Tuberculous constrictive pericarditis is a rare condition with a high mortality rate. The coexistence of constrictive pericarditis and intracardiac tuberculoma has not previously been reported. We report the case of a 65-year-old man presenting with left-side pleural effusion and signs of systemic venous congestion for 2 months. Echocardiography and computerized ...

Extra nasopharyngeal origin of angiofibroma is very rare. The nasal septum is a very rare site of extra nasopharyngeal angiofibroma with only two cases reported in the medical literature. We report here a case of a vascular mass arising from the nasal septum of an 8 year old boy. Histopathology ...

We report a unique case of skeletal metastasis with prominent soft tissue extension from a colon cancer in a 44-year-old male patient. Four years after the diagnosis of colon cancer, plain radiographic examinations revealed a prominent soft tissue mass associated with cortical destruction of the right femur. Palliative radiotherapy of ...

Echinococcosis (hydatid cyst disease) is a zoonotic infection caused by the parasitic tapeworm Echinococcus. The larval stage of this parasite can implant in many organs of the body, most commonly the liver, and create internal budding cystic masses. Echinococcal cysts also can implant in soft tissues; however, a review of ...

A 58-year-old man with a history of severe invalidating claudicatio intermittens underwent femoropopliteal bypass with a human umbilical vein graft. Seven years later he presented with a painful enlarging mass in the middle portion of his right thigh. The duplex scan showed a pseudoaneurysm of the body of the prosthesis, ...

Localized amyloidosis in the head and neck is a rare and benign disease. Larynx is the most common site of involvement and accounts for 0.2% to 1.5% of benign laryngeal tumors. The oral cavity and pharynx may also be involved in localized amyloidosis of the head and neck. There are ...

We describe a 9-year-old boy who presented with dyspnea and with a neck mass which was initially described as a thyroid nodule. At the end of the diagnostic-therapeutic research this mass was finally diagnosed as an adult rhabdomyoma originating from the mediastinum. This is an extremely rare tumor which is ...

OBJECTIVE: To discuss the clinical course and management of pilomatricoma involving the head and neck in the pediatric age group and to review the literature. METHODS: Retrospective analysis of the author's case files between the years of 1996 and 2000, revealed seven cases of head and neck pilomatricoma involving children. ...

A 52-year-old male presented with dyspnoea on exertion. He was found to have a clinically normal cardiac status and a mass lesion in the anterior mediastinum, probably arising from the pericardium near the right atrium, as shown by both echocardiography and a computerized tomographic scan of the chest. He was ...

We report herein the case of a 33-year-old woman who presented with palpable abdominal swelling found to be caused by a huge lymphangioma of the pancreas. An abdominal computed tomographic (CT) scan showed a large multilocular cystic mass with water-dense contents, which was derived from the pancreatic head. A pancreaticoduodenectomy ...

Dieulafoy's disease is a vascular anomaly characterized by the presence of a dysplastic artery that is related to an epithelial ulcer. While it is most frequently a GI condition, occurrence in the bronchus has been reported previously in six cases. We present the case of a 51-year-old man with severe ...

The ultrasonographic appearance of breast hamartomas (BHs) is described and its diagnostic utility is discussed in this study of 27 women with mammographic findings both typical and atypical of BH. The role of computed tomography (CT) in the diagnosis of BH of atypical mammographic appearance is also analyzed. These 27 ...

Meconium periorchitis (MPO) is an uncommon entity associated with healed meconium peritonitis. The typical presentation is soft hydrocele at birth which becomes harder in weeks as the meconium calcifies. It mimics a scrotal mass, and, without knowledge of this rare disease, this may lead to unnecessary surgery. Both the masses ...

Actinomycosis is an infectious disease caused by certain Actinomyces species. Actinomyces are Gram-positive, non-spore forming organisms characterized by obligate or facultative anaerobic rods that normally inhabit anaerobic niches of the human oral cavity. Cervicofacial, abdominal, pelvic and thoracic infections of Actinomyces are not uncommon, but endobronchial actinomycosis is rarely reported. ...

Three cases are presented where pelvic masses were originally misdiagnosed as cases of chronic urinary retention. In all cases the erroneous diagnosis was made at outpatient assessment, where postmicturition ultrasound scan measurement of residual urine volume had been performed. This investigation, while a useful tool, must be viewed in the ...

Mesenchymal hamartoma of the liver is an unusual oncologic entity which occurs almost exclusively in infancy and childhood; fewer than 200 cases have been reported. We present the case of a 21-year-old female, who was admitted to our institution with a painful right subcostal mass lasting for 6 months, who ...

Pyomyositis is a pyogenic infection of skeletal muscle. Its incidence in temperate countries though low is rising. Most cases from the temperate region involve immuno-compromised patients. The onset is usually insidious with progression to large purulent collections. Because of its low incidence in temperate countries, it is often initially misdiagnosed. ...

Intracortical osteosarcoma is the rarest anatomic variation of osteosarcoma. There have been only 12 cases reported in the English-language literature. We present a case of osteosarcoma in an 18-year-old Taiwanese man that originated within the cortex of the tibial diaphysis. The initial radiograph revealed a lytic mass confined to the ...

Lingual osteoma, a rare clinical entity, has been found mainly in the posterior region of tongue. It mostly affects women in their third and fourth decades of life and occurs less frequently in men. We report an unusual case of a 42-year-old male patient who developed a lingual osteoma near ...

OBJECTIVE AND IMPORTANCE: The pathophysiological features of syringomyelia are not yet entirely understood. We present a case of a supratentorial mass causing tonsillar herniation and syringomyelia. CLINICAL PRESENTATION: A 51-year-old woman underwent magnetic resonance imaging for evaluation of progressive headaches. A large parieto-occipital mass was revealed. Herniation of the cerebellar ...

The field of electrospray ionization mass spectrometry is reviewed with emphasis placed upon advances in the elucidation of fundamental mechanistic aspects of the ionization process that have been reported over the past 10 years. The analytical consequences of these findings are also examined. Eight central conclusions or 'tenets' are presented, ...

PURPOSE: To describe the clinical features and management of a patient with an extralacrimal dacryolith. METHODS: Case report. RESULTS: A 43-year-old woman remarked at a routine eye examination that a small, firm mass located for several years on the right side of her nose had recently become slightly larger. The ...

We describe a case of juvenile hyaline fibromatosis (JHF) in a Turkish child. Only about 40 cases of juvenile hyaline fibromatosis had been reported in English literature as of March 1998, and it had not been reported in English literature from Turkey as of November 1998. Juvenile hyaline fibromatosis characterized ...

Fetus in fetu is a rare condition in which a fetiform calcified mass often is present in the abdomen of its host, a newborn or an infant. We report on a case of a 19-month-old girl whose plain abdominal radiograph, ultrasonography, and computed tomography scan revealed a mass in which ...

In 1990, the APA Task Force on ECT cited no "absolute" contraindications to ECT but "Substantial Risk" to be associated with ECT for patients with space occupying or other cerebral lesions with increased intracranial pressure and with bleeding or otherwise unstable vascular aneurysm or malformation. These findings indicate that patients ...