Introduction: Malakoplakia is a rare acquired granulomatous inflammatory condition. Microscopically it is characterized by sheets of histiocytes with abundant eosinophilic granular cytoplasm (known as von Hansemann ce...Introduction: Malakoplakia is a rare acquired granulomatous inflammatory condition. Microscopically it is characterized by sheets of histiocytes with abundant eosinophilic granular cytoplasm (known as von Hansemann cells) with intracytoplasmic rounded concentric basophilic inclusions (Michelis-Guttmann bodies). We reviewed all cases of malakoplakia diagnosed at our institution in the past 15 years, including clinical, macroscopic, and microscopic features as well as treatment and prognosis. Methods: Gross and microscopic features of cases diagnosed as malakoplakia from 2005 to 2019 at our institution were reviewed. Clinical history, including sites of involvement, clinical presentation, imaging, past medical history, treatment, follow-up and prognosis, as well as demographic characteristics were obtained. Results: Eighteen surgical pathology cases of malakoplakia were identified. Most cases occurred in female (14/18, 77.8%) and all in adults (median age 48.5 years;range 31 - 87). Half of the patients were Caucasian, 44% African American and 6% were reported as “other” race. One third (6/18) of patients presented with a mass-like lesion on imaging or endoscopic studies. As to site of lesion, 61.1% (11/18) involved GU tract, 27.8% (5/18) gastrointestinal (GI) tract, 5.6% (1/18) liver, and 5.6% (1/18) vagina. 38.9% of patients (7/18) had antibiotics treatment upon diagnosis. Conclusion: Malakoplakia is a rare disorder occurring in a wide age range, more commonly in females, with no significant racial prevalence. While the GU and GI tracts are the most common sites, other anatomic locations can be involved. Accurate diagnosis and appropriate treatment are important to avoid recurrence.展开更多
Malakoplakia, typically involving the urinary tract, is an uncommon form of chronic inflammation caused by chronic infections and characterized by accumulation of macrophages. It has also been found in many other site...Malakoplakia, typically involving the urinary tract, is an uncommon form of chronic inflammation caused by chronic infections and characterized by accumulation of macrophages. It has also been found in many other sites such as the gastrointestinal tract, pancreas, liver, lymph nodes, skin, respiratory tract, adrenal gland, vagina and brain. We present a case of a 64-year-old man referred to our hospital with cachexia and radiologic evidence of metastatic tumor of the liver. Colonoscopy revealed a large malignant - appearing polypoid mass of the ascending colon and multiple distinct polyps throughout the rest of the colon. Biopsies of the ascending colon mass confirmed the diagnosis of adenocarcinoma. Histological examination of two of the other polyps revealed malakoplakia which was characterized by aggregates of granular histiocytes with Michaelis - Gutmann bodies and histochemically confirmed with periodic acid-Schiff and von Kossa stains. This is a rare case diagnosed on endoscopic samples. The majority of reported cases were found in surgical specimens. In addition, the endoscopic appearance of multiple polyps is unusual in rnalakoplakia.展开更多
Malakoplakia is a rare granulomatous disease probably caused by infection and characterized histologically by Michaelis-Gutmann bodies.We report a more rarely seen case esophageal malakoplakia in a 54-year-old woman.S...Malakoplakia is a rare granulomatous disease probably caused by infection and characterized histologically by Michaelis-Gutmann bodies.We report a more rarely seen case esophageal malakoplakia in a 54-year-old woman.She presented with coughing while eating and drinking.Gastroscopy showed yellow nodules in the esophagus,and endoscopic ultrasonography showed a space-occupying lesion in the substratum of the esophageal mucosa.All findings highly resembled esophageal cancer.Histopathological examination finally indentified this space-occupying lesion as malakoplakia and not cancer.Immunohistochemistry showed that she had human papillomavirus(HPV) infection in the esophagus,which indicates that infection was responsible for the malakoplakia.This is believed to be the first case of malakoplakia in the esophagus,and more importantly,we established that HPV infection was the initiator of esophageal malakoplakia.展开更多
Malakoplakia is an uncommon chronic inflammatory disease usually affecting the urogenital tract and often associated with the infection due to?E. coli. It is characterised by the presence of Von Hansemann cells and in...Malakoplakia is an uncommon chronic inflammatory disease usually affecting the urogenital tract and often associated with the infection due to?E. coli. It is characterised by the presence of Von Hansemann cells and intracytoplasmic inclusion bodies called Michaelis-Gutmann Bodies. Testes are affected in 12% cases. The lesion mainly occurs in middle aged men, appearing clinically as epididymo-orchitis or testicular enlargement with fibrous consistency and some soft areas. Orchidectomy is the only way to differentiate the lesion from other malignant or infected processes. This is a case report of a young patient with testicular malakoplakia.展开更多
文摘Introduction: Malakoplakia is a rare acquired granulomatous inflammatory condition. Microscopically it is characterized by sheets of histiocytes with abundant eosinophilic granular cytoplasm (known as von Hansemann cells) with intracytoplasmic rounded concentric basophilic inclusions (Michelis-Guttmann bodies). We reviewed all cases of malakoplakia diagnosed at our institution in the past 15 years, including clinical, macroscopic, and microscopic features as well as treatment and prognosis. Methods: Gross and microscopic features of cases diagnosed as malakoplakia from 2005 to 2019 at our institution were reviewed. Clinical history, including sites of involvement, clinical presentation, imaging, past medical history, treatment, follow-up and prognosis, as well as demographic characteristics were obtained. Results: Eighteen surgical pathology cases of malakoplakia were identified. Most cases occurred in female (14/18, 77.8%) and all in adults (median age 48.5 years;range 31 - 87). Half of the patients were Caucasian, 44% African American and 6% were reported as “other” race. One third (6/18) of patients presented with a mass-like lesion on imaging or endoscopic studies. As to site of lesion, 61.1% (11/18) involved GU tract, 27.8% (5/18) gastrointestinal (GI) tract, 5.6% (1/18) liver, and 5.6% (1/18) vagina. 38.9% of patients (7/18) had antibiotics treatment upon diagnosis. Conclusion: Malakoplakia is a rare disorder occurring in a wide age range, more commonly in females, with no significant racial prevalence. While the GU and GI tracts are the most common sites, other anatomic locations can be involved. Accurate diagnosis and appropriate treatment are important to avoid recurrence.
文摘Malakoplakia, typically involving the urinary tract, is an uncommon form of chronic inflammation caused by chronic infections and characterized by accumulation of macrophages. It has also been found in many other sites such as the gastrointestinal tract, pancreas, liver, lymph nodes, skin, respiratory tract, adrenal gland, vagina and brain. We present a case of a 64-year-old man referred to our hospital with cachexia and radiologic evidence of metastatic tumor of the liver. Colonoscopy revealed a large malignant - appearing polypoid mass of the ascending colon and multiple distinct polyps throughout the rest of the colon. Biopsies of the ascending colon mass confirmed the diagnosis of adenocarcinoma. Histological examination of two of the other polyps revealed malakoplakia which was characterized by aggregates of granular histiocytes with Michaelis - Gutmann bodies and histochemically confirmed with periodic acid-Schiff and von Kossa stains. This is a rare case diagnosed on endoscopic samples. The majority of reported cases were found in surgical specimens. In addition, the endoscopic appearance of multiple polyps is unusual in rnalakoplakia.
文摘Malakoplakia is a rare granulomatous disease probably caused by infection and characterized histologically by Michaelis-Gutmann bodies.We report a more rarely seen case esophageal malakoplakia in a 54-year-old woman.She presented with coughing while eating and drinking.Gastroscopy showed yellow nodules in the esophagus,and endoscopic ultrasonography showed a space-occupying lesion in the substratum of the esophageal mucosa.All findings highly resembled esophageal cancer.Histopathological examination finally indentified this space-occupying lesion as malakoplakia and not cancer.Immunohistochemistry showed that she had human papillomavirus(HPV) infection in the esophagus,which indicates that infection was responsible for the malakoplakia.This is believed to be the first case of malakoplakia in the esophagus,and more importantly,we established that HPV infection was the initiator of esophageal malakoplakia.
文摘Malakoplakia is an uncommon chronic inflammatory disease usually affecting the urogenital tract and often associated with the infection due to?E. coli. It is characterised by the presence of Von Hansemann cells and intracytoplasmic inclusion bodies called Michaelis-Gutmann Bodies. Testes are affected in 12% cases. The lesion mainly occurs in middle aged men, appearing clinically as epididymo-orchitis or testicular enlargement with fibrous consistency and some soft areas. Orchidectomy is the only way to differentiate the lesion from other malignant or infected processes. This is a case report of a young patient with testicular malakoplakia.
