Cavernous lymphangiomas, characterized by the cystic enlargement of lymphatic vessels in the dermis and subcutaneous tissue, are rarely reported in the scalp. We present the case of a 6-month-old male infant with occipital scalp swelling, whose ultrasonographic examination identified a multiseptated hypoechoic mass in the subcutaneous layer. Histologically, the tumor exhibited irregular, dilated spaces lined with a single layer of endothelial cells, showing D2-40 positivity. This represents a rare case of pediatric cavernous lymphangioma of the scalp, accompanied by a literature review.

Cavernous lymphangiomas, characterized by the cystic enlargement of lymphatic vessels in the dermis and subcutaneous tissue, are rarely reported in the scalp. We present the case of a 6-month-old male infant with occipital scalp swelling, whose ultrasonographic examination identified a multiseptated hypoechoic mass in the subcutaneous layer. Histologically, the tumor exhibited irregular, dilated spaces lined with a single layer of endothelial cells, showing D2-40 positivity. This represents a rare case of pediatric cavernous lymphangioma of the scalp, accompanied by a literature review.

Cavernous lymphangiomas, characterized by the cystic enlargement of lymphatic vessels in the dermis and subcutaneous tissue, are rarely reported in the scalp. We present the case of a 6-month-old male infant with occipital scalp swelling, whose ultrasonographic examination identified a multiseptated hypoechoic mass in the subcutaneous layer. Histologically, the tumor exhibited irregular, dilated spaces lined with a single layer of endothelial cells, showing D2-40 positivity. This represents a rare case of pediatric cavernous lymphangioma of the scalp, accompanied by a literature review.

Cavernous lymphangiomas, characterized by the cystic enlargement of lymphatic vessels in the dermis and subcutaneous tissue, are rarely reported in the scalp. We present the case of a 6-month-old male infant with occipital scalp swelling, whose ultrasonographic examination identified a multiseptated hypoechoic mass in the subcutaneous layer. Histologically, the tumor exhibited irregular, dilated spaces lined with a single layer of endothelial cells, showing D2-40 positivity. This represents a rare case of pediatric cavernous lymphangioma of the scalp, accompanied by a literature review.

Pleural metastasis is the most common cause of malignant diseases involving the pleura, and characterized by pleural effusion, nodules, and thickening. Pleuroparenchymal fibroelastosis (PPFE) is a disease characterized by apical pleural thickening and subjacent parenchymal fibrosis. We report a case of a 60-year-old male with lung cancer in the left lower lobe and underlying PPFE combined with left apical pleural metastasis. Initially, asymmetric left apical pleural thickening due to pleural metastasis was mistaken for PPFE. Additionally, we describe the imaging and histopathological findings of PPFE, including MRI findings.

Pleural metastasis is the most common cause of malignant diseases involving the pleura, and characterized by pleural effusion, nodules, and thickening. Pleuroparenchymal fibroelastosis (PPFE) is a disease characterized by apical pleural thickening and subjacent parenchymal fibrosis. We report a case of a 60-year-old male with lung cancer in the left lower lobe and underlying PPFE combined with left apical pleural metastasis. Initially, asymmetric left apical pleural thickening due to pleural metastasis was mistaken for PPFE. Additionally, we describe the imaging and histopathological findings of PPFE, including MRI findings.

Primary cutaneous mucinous carcinoma (PCMC) is a rare malignant neoplasm that originates from the deepest part of the eccrine sweat glands. Characterized by slow growth, PCMC often appears on the head and neck of older patients. Although it rarely metastasizes, its high recurrence rate leads to significant morbidity. Clinically differentiating PCMC from benign tumors is challenging due to its slow growth and asymptomatic nature, and a biopsy is often required for a definitive diagnosis. A 77-year-old man presented with a non-tender lesion on his left lower eyelid that had been gradually progressing over a decade. The lesion was excised, and histological examination confirmed it as PCMC. A positron emission tomography-computed tomography scan conducted to differentiate between primary and metastatic cancer showed no abnormal findings. Computed tomography was then performed to assess the remaining primary site, followed by a wide excision. The frozen biopsy revealed no cancer in the margins from five directions; however, the permanent biopsy confirmed the presence of cancer in the base margin. After consultation with the hematology-oncology department, the patient underwent additional radiation therapy. One year post-surgery, there were no signs of recurrence.

Primary cutaneous mucinous carcinoma (PCMC) is a rare malignant neoplasm that originates from the deepest part of the eccrine sweat glands. Characterized by slow growth, PCMC often appears on the head and neck of older patients. Although it rarely metastasizes, its high recurrence rate leads to significant morbidity. Clinically differentiating PCMC from benign tumors is challenging due to its slow growth and asymptomatic nature, and a biopsy is often required for a definitive diagnosis. A 77-year-old man presented with a non-tender lesion on his left lower eyelid that had been gradually progressing over a decade. The lesion was excised, and histological examination confirmed it as PCMC. A positron emission tomography-computed tomography scan conducted to differentiate between primary and metastatic cancer showed no abnormal findings. Computed tomography was then performed to assess the remaining primary site, followed by a wide excision. The frozen biopsy revealed no cancer in the margins from five directions; however, the permanent biopsy confirmed the presence of cancer in the base margin. After consultation with the hematology-oncology department, the patient underwent additional radiation therapy. One year post-surgery, there were no signs of recurrence.

Pleural metastasis is the most common cause of malignant diseases involving the pleura, and characterized by pleural effusion, nodules, and thickening. Pleuroparenchymal fibroelastosis (PPFE) is a disease characterized by apical pleural thickening and subjacent parenchymal fibrosis. We report a case of a 60-year-old male with lung cancer in the left lower lobe and underlying PPFE combined with left apical pleural metastasis. Initially, asymmetric left apical pleural thickening due to pleural metastasis was mistaken for PPFE. Additionally, we describe the imaging and histopathological findings of PPFE, including MRI findings.

Primary cutaneous mucinous carcinoma (PCMC) is a rare malignant neoplasm that originates from the deepest part of the eccrine sweat glands. Characterized by slow growth, PCMC often appears on the head and neck of older patients. Although it rarely metastasizes, its high recurrence rate leads to significant morbidity. Clinically differentiating PCMC from benign tumors is challenging due to its slow growth and asymptomatic nature, and a biopsy is often required for a definitive diagnosis. A 77-year-old man presented with a non-tender lesion on his left lower eyelid that had been gradually progressing over a decade. The lesion was excised, and histological examination confirmed it as PCMC. A positron emission tomography-computed tomography scan conducted to differentiate between primary and metastatic cancer showed no abnormal findings. Computed tomography was then performed to assess the remaining primary site, followed by a wide excision. The frozen biopsy revealed no cancer in the margins from five directions; however, the permanent biopsy confirmed the presence of cancer in the base margin. After consultation with the hematology-oncology department, the patient underwent additional radiation therapy. One year post-surgery, there were no signs of recurrence.