Bilateral multifocal upper extremity atypical granular cell tumors presenting as long-standing right wrist and left hand masses in a 15-year-old African-American female

Benign Hand Tumors (Part II): Soft Tissue Tumors

Background: Benign soft-tissue tumors of the hand are more common than both their benign bone and malignant soft-tissue counterparts. This study evaluates the characteristics and treatment of benign soft tissue tumors in light of 1 institution's experience. Methods: Histologically confirmed benign soft-tissue tumors of the hand were retrospectively identified using International Classification of Disease codes from 1992 to 2015. A medical chart review was conducted to collect patient demographics, tumor epidemiology, and treatment. Results: A total of 199 soft-tissue tumors were identified. The median patient age at time of treatment was 47.4 ± 14.7 years in age. The majority of tumors were located in the digits (n = 168, 84%) and treated by excision (n = 191, 96%). Localized type tenosynovial giant cell tumors (n = 71, 36%) were the most common and had the highest rates of recurrence (8.5%) in this series. Other frequent histologies included hemangioma, schwannoma, and glomus tumors. Conclusion: Awareness and understanding of tumor characteristics may help physicians with diagnosis and treatment. There is an extensive variety of tumors, but the principles of clinical and imaging diagnosis are common to all of them. Marginal excision for the treatment pain, improvement of function, and cosmetic correction applies to all these tumors independent of the histology.

Multifocal Cutaneous Granular Cell Tumor in Children: A Rare Entity

ABSTRACT

Granular cell tumors (GCTs) are rare soft tissue tumors of Schwann cell origin that manifest as papulonodular lesions and occur mainly in adults. The diagnosis is usually confirmed by histopathology. Most of GCTs are benign, but some lesions may exhibit malignant criteria. This study is a retrospective case series including all children with histopathologically documented multiple GCTs who attended the dermatology department of the university hospitals between February 2008 and March 2021. The objective of our study was to raise awareness to this unrecognized and rare entity in such age group. The study included 9 patients (6 girls and 3 boys) with multiple GCTs. Their age ranged between 5 and 13 years. The lesions were skin-colored to light brown, firm, smooth-surfaced nodules. Most of the lesions were on the extremities, and their mean diameter was 160.5 mm2. None of the lesions exhibited any malignant criteria on histopathology. No extracutaneous or mucosal lesions were detected. Dermatologists should be aware of this rare condition in children because early recognition allows more conservative resection of the tumor and less invasive reconstruction of the defect. Our study highlights that multifocality does not necessarily indicate malignancy or other systemic comorbidities.

Granular Cell Tumor of Thyroid: Challenging Pitfalls and Mimickers in Diagnosis

Mesenchymal tumors of the thyroid are extremely rare. Only few isolated cases of primary thyroid granular cell tumor (GrCT) have been reported. The anatomic location of this lesion plays an important role in the differential diagnosis. It is well-known that GrCT commonly involves the head-and-neck region, lower extremity, nuchal region, chest wall, and internal viscera such as the gastrointestinal tract. However, primary GrCT of the thyroid are unexpected and might lead to misdiagnosis, especially with pathological diagnosis limitations such as frozen section and fine-needle aspiration. We believe that it is important to establish a good differential diagnosis because of its ability to simulate the appearance of invasive carcinoma, especially in cases lacking tissue block examination. In this paper, we try to focus on clinical, radiological potential characteristics, and the differential diagnosis of the tumor.

Abrikossoff's tumour on the upper limb: a rare presentation

Abrikossoff's tumour or granular cell tumour is a rare entity. Most common locations are the head and neck, with only a few cases reported on the upper limbs. A 55-year-old man with a nodular lesion on the left arm resorted to surgery consultation. Nodule was firm, mobile, painless and non-ulcerated. Total excision using a Limberg flap procedure was performed. Following 3 months of follow-up, the patient is fine. Abrikossoff's tumour is frequently presented in the second to sixth decade of life as an ulcerated nodule with progressive growth. Malignant form is rare, with metastases occurring in up to 3% of patients. Excision must be accomplished with free margins. Recurrence is rare. Abrikossoff's tumour on the upper limbs is rare. Although benignity is the rule, doctors must be aware of the possibility of harbouring a cancer. Surgery is the treatment of choice.